{"id":103660,"date":"2025-03-29T10:35:42","date_gmt":"2025-03-29T06:05:42","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/"},"modified":"2025-03-29T10:35:42","modified_gmt":"2025-03-29T06:05:42","slug":"15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/","title":{"rendered":"15 \u0645\u0648\u0631\u062f \u0628\u0631\u062a\u0631 \u062f\u0631 \u0645\u0648\u0631\u062f \u0627\u0634\u062a\u0628\u0627\u0647\u0627\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u062c\u062f\u062f \u0647\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633 \u0628\u0627\u06cc\u062f \u0628\u062f\u0627\u0646\u0646\u062f"},"content":{"rendered":"<div data-article-id=\"2364061\" id=\"article-body\">\n<p>\u0647\u0648\u06a9 Usestate \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u062a\u062f\u0627\u0648\u0644 \u062a\u0631\u06cc\u0646 \u0642\u0644\u0627\u0628 \u062f\u0631 React \u0627\u0633\u062a \u060c \u0627\u0645\u0627 \u0686\u0646\u062f \u0627\u0634\u062a\u0628\u0627\u0647 \u0638\u0631\u06cc\u0641 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u06af\u0627\u0646 \u0627\u063a\u0644\u0628 \u0645\u0631\u062a\u06a9\u0628 \u0645\u06cc \u0634\u0648\u0646\u062f.<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u060c \u0634\u0645\u0627 \u06cc\u0627\u062f \u062e\u0648\u0627\u0647\u06cc\u062f \u06af\u0631\u0641\u062a \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u06cc\u062f \u0648 \u0645\u0646\u0637\u0642 \u062d\u0627\u0644\u062a \u0628\u0647\u062a\u0631\u06cc \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f.<\/p>\n<hr\/>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter-rtl ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: 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href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_1_%D9%81%D8%B1%D8%B6_%DA%A9%D9%86%DB%8C%D8%AF_%DA%A9%D9%87_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D9%87%D8%A7%DB%8C_SetState_%D8%A8%D9%84%D8%A7%D9%81%D8%A7%D8%B5%D9%84%D9%87_%D9%88%D8%B6%D8%B9%DB%8C%D8%AA\" >\u0627\u0634\u062a\u0628\u0627\u0647 1: \u0641\u0631\u0636 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc SetState \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0648\u0636\u0639\u06cc\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%81%D8%B1%D9%85_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0641\u0631\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_2_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A7%D8%B4%DB%8C%D8%A7%D8%A1_%D8%A8%D8%AF%D9%88%D9%86_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A7%D8%AF%D8%BA%D8%A7%D9%85\" >\u0627\u0634\u062a\u0628\u0627\u0647 2: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0628\u062f\u0648\u0646 \u062d\u0627\u0644\u062a \u0627\u062f\u063a\u0627\u0645<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%AD%D8%A7%D9%84%D8%AA_%D9%82%D8%A8%D9%84%DB%8C_%D8%B1%D8%A7_%D9%BE%D8%AE%D8%B4_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc \u0631\u0627 \u067e\u062e\u0634 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_3_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A8%DB%8C_%D9%86%D8%B8%DB%8C%D8%B1_%D8%AF%D8%B1_%D8%AF%D8%B3%D8%AA%DA%AF%DB%8C%D8%B1%D9%86%D8%AF%DA%AF%D8%A7%D9%86_%D8%B1%D9%88%DB%8C%D8%AF%D8%A7%D8%AF\" >\u0627\u0634\u062a\u0628\u0627\u0647 3: \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u0628\u06cc \u0646\u0638\u06cc\u0631 \u062f\u0631 \u062f\u0633\u062a\u06af\u06cc\u0631\u0646\u062f\u06af\u0627\u0646 \u0631\u0648\u06cc\u062f\u0627\u062f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%81%D8%B1%D9%85_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF-2\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0641\u0631\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_4_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D9%85%D8%B4%D8%AA%D9%82_%D8%B4%D8%AF%D9%87_%D8%AF%D8%B1_%D9%85%D8%A4%D9%84%D9%81%D9%87\" >\u0627\u0634\u062a\u0628\u0627\u0647 4: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u0645\u0634\u062a\u0642 \u0634\u062f\u0647 \u062f\u0631 \u0645\u0624\u0644\u0641\u0647<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%85%D9%82%D8%A7%D8%AF%DB%8C%D8%B1_%D9%85%D8%B4%D8%AA%D9%82_%D8%B4%D8%AF%D9%87_%D8%B1%D8%A7_%D9%85%D8%B3%D8%AA%D9%82%DB%8C%D9%85%D8%A7%D9%8B_%D9%85%D8%AD%D8%A7%D8%B3%D8%A8%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0634\u062a\u0642 \u0634\u062f\u0647 \u0631\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0645\u062d\u0627\u0633\u0628\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_5_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%AA%D9%86%D8%A8%D9%84_%D8%A8%D8%B1%D8%A7%DB%8C_%D9%85%D8%AD%D8%A7%D8%B3%D8%A8%D8%A7%D8%AA_%DA%AF%D8%B1%D8%A7%D9%86_%D9%82%DB%8C%D9%85%D8%AA_%D8%AF%D9%88%D9%84%D8%AA\" >\u0627\u0634\u062a\u0628\u0627\u0647 5: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0628\u0644 \u0628\u0631\u0627\u06cc \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u06af\u0631\u0627\u0646 \u0642\u06cc\u0645\u062a \u062f\u0648\u0644\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%AA%D9%86%D8%A8%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_6_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%D8%AF%D8%B3%D8%AA%DB%8C_%D9%87%D8%B1_%D8%A7%DB%8C%D8%A7%D9%84%D8%AA_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%DA%A9%D8%A7%D9%85%D9%84\" >\u0627\u0634\u062a\u0628\u0627\u0647 6: \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u062f\u0633\u062a\u06cc \u0647\u0631 \u0627\u06cc\u0627\u0644\u062a \u0628\u0631\u0627\u06cc \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u06a9\u0627\u0645\u0644<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%D8%AE%D9%88%D8%AF%DA%A9%D8%A7%D8%B1_%D8%A8%D8%A7_key\" >\u0631\u0627\u0647 \u062d\u0644: \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u062e\u0648\u062f\u06a9\u0627\u0631 \u0628\u0627 key<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_7_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A2%D8%B1%D8%A7%DB%8C%D9%87_%D9%87%D8%A7_%DB%8C%D8%A7_%D8%A7%D8%B4%DB%8C%D8%A7%D8%A1_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D9%85%D8%B1%D8%AA%D8%A8%D8%B7\" >\u0627\u0634\u062a\u0628\u0627\u0647 7: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627 \u06cc\u0627 \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u0645\u0631\u062a\u0628\u0637<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D8%AA%D8%B1%DA%A9%DB%8C%D8%A8%DB%8C\" >\u0631\u0627\u0647 \u062d\u0644: \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0631\u06a9\u06cc\u0628\u06cc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_8_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%82%D9%84%D8%A7%D8%A8_%DA%A9%D8%A7%D8%B1%D8%A8%D8%B1_%D8%A8%D8%B1%D8%A7%DB%8C_%D9%85%D9%86%D8%B7%D9%82_%D9%BE%DB%8C%DA%86%DB%8C%D8%AF%D9%87\" >\u0627\u0634\u062a\u0628\u0627\u0647 8: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0644\u0627\u0628 \u06a9\u0627\u0631\u0628\u0631 \u0628\u0631\u0627\u06cc \u0645\u0646\u0637\u0642 \u067e\u06cc\u0686\u06cc\u062f\u0647<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF_useReducer_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D9%BE%DB%8C%DA%86%DB%8C%D8%AF%D9%87\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f useReducer \u0628\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_9_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%82%D9%84%D8%A7%D8%A8_%D8%B3%D9%81%D8%A7%D8%B1%D8%B4%DB%8C_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AA%D8%B9%D8%A7%D9%85%D9%84_%D8%A8%D8%A7_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7%DB%8C_%D9%85%D8%AD%D9%84%DB%8C\" >\u0627\u0634\u062a\u0628\u0627\u0647 9: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0644\u0627\u0628 \u0633\u0641\u0627\u0631\u0634\u06cc \u0628\u0631\u0627\u06cc \u062a\u0639\u0627\u0645\u0644 \u0628\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0645\u062d\u0644\u06cc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%87%D9%85%DA%AF%D8%A7%D9%85_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%B0%D8%AE%DB%8C%D8%B1%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D9%85%D8%AD%D9%84%DB%8C\" >\u0631\u0627\u0647 \u062d\u0644: \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0633\u0627\u0632\u06cc \u0645\u062d\u0644\u06cc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_10_%D8%A8%D8%A7%D8%B2%D9%86%D9%88%DB%8C%D8%B3%DB%8C_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%88%D8%B1%D9%88%D8%AF%DB%8C_%D9%87%D8%A7%DB%8C_%DA%A9%D9%86%D8%AA%D8%B1%D9%84_%D8%B4%D8%AF%D9%87\" >\u0627\u0634\u062a\u0628\u0627\u0647 10: \u0628\u0627\u0632\u0646\u0648\u06cc\u0633\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062d\u0627\u0644\u062a \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0634\u062f\u0647<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%85%D9%82%D8%A7%D8%AF%DB%8C%D8%B1_%D9%85%D9%88%D8%AC%D9%88%D8%AF_%D8%B1%D8%A7_%D9%BE%D8%AE%D8%B4_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0648\u062c\u0648\u062f \u0631\u0627 \u067e\u062e\u0634 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_11_%D8%B9%D8%AF%D9%85_%D8%A7%D9%86%D8%AC%D8%A7%D9%85_%DA%86%DA%A9_%D9%87%D8%A7%DB%8C_%D8%A8%D8%B1%D8%A7%D8%A8%D8%B1%DB%8C_%D8%AF%D8%B1_%D9%87%D9%86%DA%AF%D8%A7%D9%85_%D8%A8%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%AF%D9%88%D9%84%D8%AA\" >\u0627\u0634\u062a\u0628\u0627\u0647 11: \u0639\u062f\u0645 \u0627\u0646\u062c\u0627\u0645 \u0686\u06a9 \u0647\u0627\u06cc \u0628\u0631\u0627\u0628\u0631\u06cc \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0628\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u062f\u0648\u0644\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%DB%8C%DA%A9_%D8%A8%D8%B1%D8%B1%D8%B3%DB%8C_%D8%A8%D8%B1%D8%A7%D8%A8%D8%B1%DB%8C_%D8%A7%D8%B6%D8%A7%D9%81%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u06cc\u06a9 \u0628\u0631\u0631\u0633\u06cc \u0628\u0631\u0627\u0628\u0631\u06cc \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_12_%D9%87%D9%85%DB%8C%D8%B4%D9%87_%D8%A7%D8%B2_Redux_%DB%8C%D8%A7_%D8%B2%D9%85%DB%8C%D9%86%D9%87_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B0%D8%AE%DB%8C%D8%B1%D9%87_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0627\u0634\u062a\u0628\u0627\u0647 12: \u0647\u0645\u06cc\u0634\u0647 \u0627\u0632 Redux \u06cc\u0627 \u0632\u0645\u06cc\u0646\u0647 \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D8%AF%D9%88%D9%84%D8%AA_%D9%85%D8%AD%D9%84%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u062f\u0648\u0644\u062a \u0645\u062d\u0644\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_13_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%86%D8%AD%D9%88_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF_Updater_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B9%D9%85%D9%84%DB%8C%D8%A7%D8%AA_Async\" >\u0627\u0634\u062a\u0628\u0627\u0647 13: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0646\u062d\u0648 \u0639\u0645\u0644\u06a9\u0631\u062f Updater \u0628\u0631\u0627\u06cc \u0639\u0645\u0644\u06cc\u0627\u062a Async<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%86%D8%AD%D9%88_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0646\u062d\u0648 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_14_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D9%86%DA%A9%D8%B1%D8%AF%D9%86_useState_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%A7%D8%B1%D8%A7%D8%A6%D9%87_%D9%85%D8%B4%D8%B1%D9%88%D8%B7_%D8%A8%D8%A7_%D9%85%D8%A7%D8%B4%DB%8C%D9%86_%D9%87%D8%A7%DB%8C_%D8%AF%D9%88%D9%84%D8%AA%DB%8C\" >\u0627\u0634\u062a\u0628\u0627\u0647 14: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u06a9\u0631\u062f\u0646 useState \u0628\u0631\u0627\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u0634\u0631\u0648\u0637 \u0628\u0627 \u0645\u0627\u0634\u06cc\u0646 \u0647\u0627\u06cc \u062f\u0648\u0644\u062a\u06cc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%DB%8C%DA%A9_%D8%AF%D8%B3%D8%AA%DA%AF%D8%A7%D9%87_%D8%AF%D9%88%D9%84%D8%AA%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u06cc\u06a9 \u062f\u0633\u062a\u06af\u0627\u0647 \u062f\u0648\u0644\u062a\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_15_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%AF%D8%B3%D8%AA%DB%8C_%D8%AE%D8%B5%D9%88%D8%B5%DB%8C%D8%A7%D8%AA_%D8%AA%D9%88_%D8%AF%D8%B1_%D8%AA%D9%88\" >\u0627\u0634\u062a\u0628\u0627\u0647 15: \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u062f\u0633\u062a\u06cc \u062e\u0635\u0648\u0635\u06cc\u0627\u062a \u062a\u0648 \u062f\u0631 \u062a\u0648<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B3%D8%A7%D8%AF%DA%AF%DB%8C_%D8%A7%D8%B2_Immer_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0631\u0627\u0647 \u062d\u0644: \u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u06af\u06cc \u0627\u0632 Immer \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D9%86%D8%B5%D8%A8_%DA%A9%D8%B1%D8%AF%D9%86_immer_%DA%A9%D8%AA%D8%A7%D8%A8%D8%AE%D8%A7%D9%86%D9%87_npm_install_immer_%D9%88_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D9%87%D8%A7%DB%8C_%D8%AA%D9%88_%D8%AF%D8%B1_%D8%AA%D9%88_%D8%B1%D8%A7_%D8%B3%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0646\u0635\u0628 \u06a9\u0631\u062f\u0646 immer \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 (npm install immer) \u0648 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u062a\u0648 \u062f\u0631 \u062a\u0648 \u0631\u0627 \u0633\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/nabfollower.com\/blog\/15-%d9%85%d9%88%d8%b1%d8%af-%d8%a8%d8%b1%d8%aa%d8%b1-%d8%af%d8%b1-%d9%85%d9%88%d8%b1%d8%af-%d8%a7%d8%b4%d8%aa%d8%a8%d8%a7%d9%87%d8%a7%d8%aa-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d9%85%d8%ac\/#%D8%A8%D8%A7_%D9%85%D9%86_%D8%A7%D8%B1%D8%AA%D8%A8%D8%A7%D8%B7_%D8%A8%D8%B1%D9%82%D8%B1%D8%A7%D8%B1_%DA%A9%D9%86%DB%8C%D8%AF\" >\u0628\u0627 \u0645\u0646 \u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0631\u0642\u0631\u0627\u0631 \u06a9\u0646\u06cc\u062f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_1_%D9%81%D8%B1%D8%B6_%DA%A9%D9%86%DB%8C%D8%AF_%DA%A9%D9%87_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D9%87%D8%A7%DB%8C_SetState_%D8%A8%D9%84%D8%A7%D9%81%D8%A7%D8%B5%D9%84%D9%87_%D9%88%D8%B6%D8%B9%DB%8C%D8%AA\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 1: \u0641\u0631\u0636 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc SetState \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0648\u0636\u0639\u06cc\u062a<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0639\u0645\u0644\u06a9\u0631\u062f SetState React \u0646\u0627\u0647\u0645\u0632\u0645\u0627\u0646 \u0627\u0633\u062a \u060c \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u06a9\u0647 \u062f\u0648\u0644\u062a \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0628\u0647 \u0631\u0648\u0632 \u0646\u0645\u06cc \u0634\u0648\u062f. \u0627\u06af\u0631 \u0633\u0639\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u062f \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u067e\u0633 \u0627\u0632 \u062a\u0645\u0627\u0633 \u0628\u0627 SetState \u0627\u0632 \u062d\u0627\u0644\u062a \u0628\u0647 \u0631\u0648\u0632 \u0634\u062f\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u060c \u0628\u0627\u0632 \u0647\u0645 \u0645\u0642\u062f\u0627\u0631 \u0642\u062f\u06cc\u0645\u06cc \u0631\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u062e\u0648\u0627\u0647\u06cc\u062f \u06a9\u0631\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">count<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCount<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">increment<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">count<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\n  <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">count<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ count is still 0 and not incremented to 1<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%81%D8%B1%D9%85_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0641\u0631\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0648\u0642\u062a\u06cc \u062d\u0627\u0644\u062a \u062c\u062f\u06cc\u062f \u0628\u0647 \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u062f \u060c \u0627\u0632 \u0641\u0631\u0645 \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>setState<\/code>\u0628\u0634\u0631<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">increment<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevCount<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">prevCount<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>   \n  <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevCount<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">prevCount<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Always works reliably<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_2_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A7%D8%B4%DB%8C%D8%A7%D8%A1_%D8%A8%D8%AF%D9%88%D9%86_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A7%D8%AF%D8%BA%D8%A7%D9%85\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 2: <strong>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0628\u062f\u0648\u0646 \u062d\u0627\u0644\u062a \u0627\u062f\u063a\u0627\u0645<\/strong><br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0646\u06af\u0627\u0645 \u06a9\u0627\u0631 \u0628\u0627 \u0627\u0634\u06cc\u0627\u0621 \u062f\u0631 <code>useState<\/code>\u060c React \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u062d\u0627\u0644\u062a \u062c\u062f\u06cc\u062f \u0631\u0627 \u0628\u0627 \u062d\u0627\u0644\u062a \u0642\u062f\u06cc\u0645\u06cc \u0645\u0627\u0646\u0646\u062f \u0627\u062f\u063a\u0627\u0645 \u0646\u0645\u06cc \u06a9\u0646\u062f <code>this.setState<\/code> \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u0634\u0648\u062f. \u062f\u0631 \u0645\u0624\u0644\u0641\u0647 \u0647\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u060c \u0634\u0645\u0627 \u0628\u0627\u06cc\u062f \u0628\u0647 \u0635\u0648\u0631\u062a \u062f\u0633\u062a\u06cc \u0634\u06cc \u0631\u0627 \u0627\u062f\u063a\u0627\u0645 \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">user<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setUser<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">({<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">John<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">30<\/span> <span class=\"p\">});<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateAge<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setUser<\/span><span class=\"p\">({<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">31<\/span> <span class=\"p\">});<\/span> <span class=\"c1\">\/\/ Overwrites the entire user state, removing `name`<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%AD%D8%A7%D9%84%D8%AA_%D9%82%D8%A8%D9%84%DB%8C_%D8%B1%D8%A7_%D9%BE%D8%AE%D8%B4_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc \u0631\u0627 \u067e\u062e\u0634 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0647\u0645\u06cc\u0634\u0647 \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u062d\u0641\u0638 \u062e\u0648\u0627\u0635 \u0645\u0648\u062c\u0648\u062f \u06af\u0633\u062a\u0631\u0634 \u062f\u0647\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">updateAge<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setUser<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevUser<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span> <span class=\"p\">...<\/span><span class=\"nx\">prevUser<\/span><span class=\"p\">,<\/span> <span class=\"na\">age<\/span><span class=\"p\">:<\/span> <span class=\"mi\">31<\/span> <span class=\"p\">}));<\/span> <span class=\"c1\">\/\/ Keeps `name` intact<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_3_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A8%DB%8C_%D9%86%D8%B8%DB%8C%D8%B1_%D8%AF%D8%B1_%D8%AF%D8%B3%D8%AA%DA%AF%DB%8C%D8%B1%D9%86%D8%AF%DA%AF%D8%A7%D9%86_%D8%B1%D9%88%DB%8C%D8%AF%D8%A7%D8%AF\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 3: <strong>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u0628\u06cc \u0646\u0638\u06cc\u0631 \u062f\u0631 \u062f\u0633\u062a\u06af\u06cc\u0631\u0646\u062f\u06af\u0627\u0646 \u0631\u0648\u06cc\u062f\u0627\u062f<\/strong><br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u06af\u0631 \u06a9\u0646\u062a\u0631\u0644 \u06a9\u0646\u0646\u062f\u0647 \u0631\u0648\u06cc\u062f\u0627\u062f \u0634\u0645\u0627 \u0628\u0647 \u0648\u0636\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u062f\u0627\u062e\u0644 \u06cc\u06a9 \u062d\u0644\u0642\u0647 \u06cc\u0627 \u0639\u0645\u0644\u06a9\u0631\u062f Async) \u0645\u062a\u06a9\u06cc \u0627\u0633\u062a \u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u0647 \u0637\u0648\u0631 \u062a\u0635\u0627\u062f\u0641\u06cc \u0627\u0632 \u0645\u0642\u0627\u062f\u06cc\u0631 \u062d\u0627\u0644\u062a \u0628\u06cc \u0646\u0638\u06cc\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">count<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCount<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">handleClick<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setTimeout<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">count<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Uses the stale `count` value<\/span>\n  <span class=\"p\">},<\/span> <span class=\"mi\">1000<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%81%D8%B1%D9%85_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF-2\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0641\u0631\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0631\u0627\u06cc \u0627\u0637\u0645\u06cc\u0646\u0627\u0646 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u0647\u0645\u06cc\u0634\u0647 \u0622\u062e\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a \u0631\u0627 \u062f\u0627\u0631\u06cc\u062f \u060c \u0627\u0632 \u0641\u0631\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">handleClick<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setTimeout<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevCount<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">prevCount<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Always gets the latest value<\/span>\n  <span class=\"p\">},<\/span> <span class=\"mi\">1000<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_4_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D9%85%D8%B4%D8%AA%D9%82_%D8%B4%D8%AF%D9%87_%D8%AF%D8%B1_%D9%85%D8%A4%D9%84%D9%81%D9%87\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 4: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u0645\u0634\u062a\u0642 \u0634\u062f\u0647 \u062f\u0631 \u0645\u0624\u0644\u0641\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0647 \u062c\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0634\u062a\u0642 \u0634\u062f\u0647 (\u0645\u0627\u0646\u0646\u062f \u062e\u0648\u0627\u0635 \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u062f\u0647) \u062f\u0631 \u062d\u0627\u0644\u062a \u060c \u0622\u0646\u0647\u0627 \u0631\u0627 \u062f\u0631 \u067e\u0631\u0648\u0627\u0632 \u0645\u062d\u0627\u0633\u0628\u0647 \u06a9\u0646\u06cc\u062f. \u0627\u06cc\u0646 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u0645\u062c\u062f\u062f\u0627\u064b \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc \u06a9\u0627\u0647\u0634 \u06cc\u0627\u0628\u062f \u0648 \u0645\u0646\u0637\u0642 \u062d\u0627\u0644\u062a \u0634\u0645\u0627 \u0631\u0627 \u0633\u0627\u062f\u0647 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">firstName<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setFirstName<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">John<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">lastName<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setLastName<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">Doe<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">fullName<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setFullName<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"s2\">`<\/span><span class=\"p\">${<\/span><span class=\"nx\">firstName<\/span><span class=\"p\">}<\/span><span class=\"s2\"> <\/span><span class=\"p\">${<\/span><span class=\"nx\">lastName<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Derived state<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateFirstName<\/span><span class=\"p\">(<\/span><span class=\"nx\">name<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setFirstName<\/span><span class=\"p\">(<\/span><span class=\"nx\">name<\/span><span class=\"p\">);<\/span>\n  <span class=\"nf\">setFullName<\/span><span class=\"p\">(<\/span><span class=\"s2\">`<\/span><span class=\"p\">${<\/span><span class=\"nx\">name<\/span><span class=\"p\">}<\/span><span class=\"s2\"> <\/span><span class=\"p\">${<\/span><span class=\"nx\">lastName<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Extra work to keep `fullName` in sync<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%85%D9%82%D8%A7%D8%AF%DB%8C%D8%B1_%D9%85%D8%B4%D8%AA%D9%82_%D8%B4%D8%AF%D9%87_%D8%B1%D8%A7_%D9%85%D8%B3%D8%AA%D9%82%DB%8C%D9%85%D8%A7%D9%8B_%D9%85%D8%AD%D8%A7%D8%B3%D8%A8%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0634\u062a\u0642 \u0634\u062f\u0647 \u0631\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0645\u062d\u0627\u0633\u0628\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">firstName<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setFirstName<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">John<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">lastName<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setLastName<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">Doe<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n\n<span class=\"c1\">\/\/ Calculate fullName dynamically<\/span>\n<span class=\"kd\">const<\/span> <span class=\"nx\">fullName<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">`<\/span><span class=\"p\">${<\/span><span class=\"nx\">firstName<\/span><span class=\"p\">}<\/span><span class=\"s2\"> <\/span><span class=\"p\">${<\/span><span class=\"nx\">lastName<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">;<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_5_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%AA%D9%86%D8%A8%D9%84_%D8%A8%D8%B1%D8%A7%DB%8C_%D9%85%D8%AD%D8%A7%D8%B3%D8%A8%D8%A7%D8%AA_%DA%AF%D8%B1%D8%A7%D9%86_%D9%82%DB%8C%D9%85%D8%AA_%D8%AF%D9%88%D9%84%D8%AA\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 5: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0628\u0644 \u0628\u0631\u0627\u06cc \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u06af\u0631\u0627\u0646 \u0642\u06cc\u0645\u062a \u062f\u0648\u0644\u062a<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u06af\u0631 \u062d\u0627\u0644\u062a \u0627\u0648\u0644\u06cc\u0647 \u0634\u0645\u0627 \u0634\u0627\u0645\u0644 \u06cc\u06a9 \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u06af\u0631\u0627\u0646 \u0627\u0633\u062a (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0648\u0627\u06a9\u0634\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627 \u060c \u062a\u062c\u0632\u06cc\u0647 JSON \u06cc\u0627 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u062d\u0627\u0633\u0628\u0647) \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u06cc\u06a9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <strong>\u0639\u0645\u0644<\/strong> \u0628\u0631\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 \u06a9\u0631\u062f\u0646 \u062f\u0648\u0644\u062a \u0628\u0627 \u062a\u0646\u0628\u0644\u06cc. \u0627\u06cc\u0646 \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0645\u062d\u0627\u0633\u0628\u0647 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u0627\u062a\u0641\u0627\u0642 \u0645\u06cc \u0627\u0641\u062a\u062f \u0648 \u0639\u0645\u0644\u06a9\u0631\u062f \u0631\u0627 \u0628\u0647\u0628\u0648\u062f \u0645\u06cc \u0628\u062e\u0634\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setData<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"nf\">expensiveComputation<\/span><span class=\"p\">());<\/span> <span class=\"c1\">\/\/ Runs every re-render of component<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%AA%D9%86%D8%A8%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setData<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nf\">expensiveComputation<\/span><span class=\"p\">());<\/span> <span class=\"c1\">\/\/ Runs only once first time component is rendered<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u0627\u0645\u0631 \u0628\u0647 \u0648\u06cc\u0698\u0647 \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0628\u0631\u062e\u0648\u0631\u062f \u0628\u0627 \u0645\u062c\u0645\u0648\u0639\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0628\u0632\u0631\u06af \u06cc\u0627 \u0645\u0646\u0637\u0642 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0645\u0641\u06cc\u062f \u0627\u0633\u062a.<\/p>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_6_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%D8%AF%D8%B3%D8%AA%DB%8C_%D9%87%D8%B1_%D8%A7%DB%8C%D8%A7%D9%84%D8%AA_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%DA%A9%D8%A7%D9%85%D9%84\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 6: \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u062f\u0633\u062a\u06cc \u0647\u0631 \u0627\u06cc\u0627\u0644\u062a \u0628\u0631\u0627\u06cc \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u06a9\u0627\u0645\u0644<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0646\u06af\u0627\u0645 \u062c\u0627\u0628\u062c\u0627\u06cc\u06cc \u0628\u06cc\u0646 \u0645\u0624\u0644\u0641\u0647 \u0647\u0627 \u06cc\u0627 \u0641\u0631\u0645 \u0647\u0627\u06cc \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u062e\u0648\u0627\u0647\u06cc\u062f \u062d\u0627\u0644\u062a \u0631\u0627 \u0628\u0647 \u0645\u0642\u062f\u0627\u0631 \u0627\u0648\u0644\u06cc\u0647 \u0622\u0646 \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0646\u06cc\u062f.<\/p>\n<p>\u0628\u0647 \u062c\u0627\u06cc \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u062f\u0633\u062a\u06cc \u0647\u0631 \u0642\u0637\u0639\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u06cc\u06a9 <strong>\u067e\u06cc\u0634\u062e\u062f\u0645\u062a \u06a9\u0644\u06cc\u062f\u06cc<\/strong> \u0628\u0631\u0627\u06cc \u0645\u062c\u0628\u0648\u0631 \u06a9\u0631\u062f\u0646 \u0648\u0627\u06a9\u0646\u0634 \u0628\u0647 \u0646\u0627\u0628\u0648\u062f\u06cc \u0648 \u0628\u0627\u0632\u067e\u0631\u062f\u0627\u062e\u062a \u0645\u0624\u0644\u0641\u0647.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">inputValue<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setInputValue<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">''<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">resetForm<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setInputValue<\/span><span class=\"p\">(<\/span><span class=\"dl\">''<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Manually reset each piece of state<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%AA%D9%86%D8%B8%DB%8C%D9%85_%D9%85%D8%AC%D8%AF%D8%AF_%D8%AE%D9%88%D8%AF%DA%A9%D8%A7%D8%B1_%D8%A8%D8%A7_key\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f \u062e\u0648\u062f\u06a9\u0627\u0631 \u0628\u0627 <code>key<\/code><br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0627 \u062a\u063a\u06cc\u06cc\u0631 <code>key<\/code> Prop \u060c React \u0645\u0624\u0644\u0641\u0647 \u0631\u0627 \u0627\u0632 \u0628\u06cc\u0646 \u0645\u06cc \u0628\u0631\u062f \u0648 \u0645\u062c\u062f\u062f\u0627\u064b \u0645\u062c\u062f\u062f\u0627\u064b \u062a\u0646\u0638\u06cc\u0645 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u062a\u0645\u0627\u0645 \u062d\u0627\u0644\u062a \u0631\u0627 \u062f\u0648\u0628\u0627\u0631\u0647 \u062a\u0646\u0638\u06cc\u0645 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<p>\u0647\u0631 \u0648\u0642\u062a \u0645\u0642\u062f\u0627\u0631 \u0645\u062a\u0641\u0627\u0648\u062a\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0622\u0646 \u0639\u0628\u0648\u0631 \u0645\u06cc \u062f\u0647\u06cc\u062f <code>key<\/code> \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u0645\u0624\u0644\u0641\u0647 \u060c \u0645\u0624\u0644\u0641\u0647 \u062f\u0648\u0628\u0627\u0631\u0647 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">App<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">formKey<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setFormKey<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"kd\">function<\/span> <span class=\"nf\">resetForm<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setFormKey<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevKey<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">prevKey<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Forces a reset<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">MyForm<\/span> <span class=\"nx\">key<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">formKey<\/span><span class=\"p\">}<\/span> <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">resetForm<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Reset<\/span> <span class=\"nx\">Form<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span>  <span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_7_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%A2%D8%B1%D8%A7%DB%8C%D9%87_%D9%87%D8%A7_%DB%8C%D8%A7_%D8%A7%D8%B4%DB%8C%D8%A7%D8%A1_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D9%85%D8%B1%D8%AA%D8%A8%D8%B7\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 7: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627 \u06cc\u0627 \u0627\u0634\u06cc\u0627\u0621 \u0628\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u0645\u0631\u062a\u0628\u0637<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0647 \u062c\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0686\u0646\u062f\u06cc\u0646 <code>useState<\/code> \u0642\u0644\u0627\u0628 \u0628\u0631\u0627\u06cc \u0642\u0637\u0639\u0627\u062a \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u062d\u0627\u0644\u062a \u060c \u0622\u0646\u0647\u0627 \u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u0634\u06cc\u0621 \u06cc\u0627 \u0622\u0631\u0627\u06cc\u0647 \u0648\u0627\u062d\u062f \u06af\u0631\u0648\u0647 \u0628\u0646\u062f\u06cc \u06a9\u0646\u06cc\u062f. \u0627\u06cc\u0646 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u06a9\u062f \u0634\u0645\u0627 \u0633\u0627\u0632\u0645\u0627\u0646 \u06cc\u0627\u0641\u062a\u0647 \u062a\u0631 \u0648 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0622\u0646 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0634\u0648\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">x<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setX<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">y<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setY<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateCoordinates<\/span><span class=\"p\">(<\/span><span class=\"nx\">newX<\/span><span class=\"p\">,<\/span> <span class=\"nx\">newY<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setX<\/span><span class=\"p\">(<\/span><span class=\"nx\">newX<\/span><span class=\"p\">);<\/span>\n  <span class=\"nf\">setY<\/span><span class=\"p\">(<\/span><span class=\"nx\">newY<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AD%D8%A7%D9%84%D8%AA_%D8%AA%D8%B1%DA%A9%DB%8C%D8%A8%DB%8C\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0631\u06a9\u06cc\u0628\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">coordinates<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCoordinates<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">({<\/span> <span class=\"na\">x<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span><span class=\"p\">,<\/span> <span class=\"na\">y<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span> <span class=\"p\">});<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateCoordinates<\/span><span class=\"p\">(<\/span><span class=\"nx\">newX<\/span><span class=\"p\">,<\/span> <span class=\"nx\">newY<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCoordinates<\/span><span class=\"p\">({<\/span> <span class=\"na\">x<\/span><span class=\"p\">:<\/span> <span class=\"nx\">newX<\/span><span class=\"p\">,<\/span> <span class=\"na\">y<\/span><span class=\"p\">:<\/span> <span class=\"nx\">newY<\/span> <span class=\"p\">});<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_8_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%82%D9%84%D8%A7%D8%A8_%DA%A9%D8%A7%D8%B1%D8%A8%D8%B1_%D8%A8%D8%B1%D8%A7%DB%8C_%D9%85%D9%86%D8%B7%D9%82_%D9%BE%DB%8C%DA%86%DB%8C%D8%AF%D9%87\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 8: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0644\u0627\u0628 \u06a9\u0627\u0631\u0628\u0631 \u0628\u0631\u0627\u06cc \u0645\u0646\u0637\u0642 \u067e\u06cc\u0686\u06cc\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0627\u06cc \u0627\u0646\u062a\u0642\u0627\u0644 \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647 (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0686\u0646\u062f\u06cc\u0646 \u062d\u0627\u0644\u062a \u0645\u0631\u062a\u0628\u0637 \u06cc\u0627 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u0645\u0634\u0631\u0648\u0637) \u060c \u062a\u0631\u06a9\u06cc\u0628 \u0631\u0627 \u062f\u0631 \u0646\u0638\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f <code>useState<\/code> \u0628\u0627 <code>useReducer<\/code>\u0628\u0634\u0631 \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u062a\u0631\u06a9\u06cc\u0628\u06cc \u06a9\u062f \u0634\u0645\u0627 \u0631\u0627 \u0645\u062f\u0648\u0644\u0627\u0631 \u0648 \u0642\u0627\u0628\u0644 \u062e\u0648\u0627\u0646\u062f\u0646 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">loading<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setLoading<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">error<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setError<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setData<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\n\n<span class=\"k\">async<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">fetchData<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setLoading<\/span><span class=\"p\">(<\/span><span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\n  <span class=\"k\">try<\/span> <span class=\"p\">{<\/span>\n    <span class=\"kd\">const<\/span> <span class=\"nx\">response<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">https:\/\/api.example.com\/data<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n    <span class=\"kd\">const<\/span> <span class=\"nx\">result<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">response<\/span><span class=\"p\">.<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\n    <span class=\"nf\">setData<\/span><span class=\"p\">(<\/span><span class=\"nx\">result<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span> <span class=\"k\">catch <\/span><span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setError<\/span><span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">.<\/span><span class=\"nx\">message<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span> <span class=\"k\">finally<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setLoading<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF_useReducer_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D9%BE%DB%8C%DA%86%DB%8C%D8%AF%D9%87\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>useReducer<\/code> \u0628\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">initialState<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span> <span class=\"na\">loading<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"na\">error<\/span><span class=\"p\">:<\/span> <span class=\"kc\">null<\/span><span class=\"p\">,<\/span> <span class=\"na\">data<\/span><span class=\"p\">:<\/span> <span class=\"kc\">null<\/span> <span class=\"p\">};<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">reducer<\/span><span class=\"p\">(<\/span><span class=\"nx\">state<\/span><span class=\"p\">,<\/span> <span class=\"nx\">action<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">switch <\/span><span class=\"p\">(<\/span><span class=\"nx\">action<\/span><span class=\"p\">.<\/span><span class=\"nx\">type<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">case<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_START<\/span><span class=\"dl\">'<\/span><span class=\"p\">:<\/span>\n      <span class=\"k\">return<\/span> <span class=\"p\">{<\/span> <span class=\"p\">...<\/span><span class=\"nx\">state<\/span><span class=\"p\">,<\/span> <span class=\"na\">loading<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">,<\/span> <span class=\"na\">error<\/span><span class=\"p\">:<\/span> <span class=\"kc\">null<\/span> <span class=\"p\">};<\/span>\n    <span class=\"k\">case<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_SUCCESS<\/span><span class=\"dl\">'<\/span><span class=\"p\">:<\/span>\n      <span class=\"k\">return<\/span> <span class=\"p\">{<\/span> <span class=\"p\">...<\/span><span class=\"nx\">state<\/span><span class=\"p\">,<\/span> <span class=\"na\">loading<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"na\">data<\/span><span class=\"p\">:<\/span> <span class=\"nx\">action<\/span><span class=\"p\">.<\/span><span class=\"nx\">payload<\/span> <span class=\"p\">};<\/span>\n    <span class=\"k\">case<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_ERROR<\/span><span class=\"dl\">'<\/span><span class=\"p\">:<\/span>\n      <span class=\"k\">return<\/span> <span class=\"p\">{<\/span> <span class=\"p\">...<\/span><span class=\"nx\">state<\/span><span class=\"p\">,<\/span> <span class=\"na\">loading<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"na\">error<\/span><span class=\"p\">:<\/span> <span class=\"nx\">action<\/span><span class=\"p\">.<\/span><span class=\"nx\">payload<\/span> <span class=\"p\">};<\/span>\n    <span class=\"nl\">default<\/span><span class=\"p\">:<\/span>\n      <span class=\"k\">return<\/span> <span class=\"nx\">state<\/span><span class=\"p\">;<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">MyComponent<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">state<\/span><span class=\"p\">,<\/span> <span class=\"nx\">dispatch<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useReducer<\/span><span class=\"p\">(<\/span><span class=\"nx\">reducer<\/span><span class=\"p\">,<\/span> <span class=\"nx\">initialState<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"k\">async<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">fetchData<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">dispatch<\/span><span class=\"p\">({<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_START<\/span><span class=\"dl\">'<\/span> <span class=\"p\">});<\/span>\n    <span class=\"k\">try<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">response<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">https:\/\/api.example.com\/data<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">result<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">response<\/span><span class=\"p\">.<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\n      <span class=\"nf\">dispatch<\/span><span class=\"p\">({<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_SUCCESS<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">payload<\/span><span class=\"p\">:<\/span> <span class=\"nx\">result<\/span> <span class=\"p\">});<\/span>\n    <span class=\"p\">}<\/span> <span class=\"k\">catch <\/span><span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nf\">dispatch<\/span><span class=\"p\">({<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">FETCH_ERROR<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">payload<\/span><span class=\"p\">:<\/span> <span class=\"nx\">err<\/span><span class=\"p\">.<\/span><span class=\"nx\">message<\/span> <span class=\"p\">});<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"p\">{<\/span><span class=\"nx\">state<\/span><span class=\"p\">.<\/span><span class=\"nx\">loading<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Loading<\/span><span class=\"p\">...<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p&gt;<\/span><span class=\"err\">}\n<\/span>      <span class=\"p\">{<\/span><span class=\"nx\">state<\/span><span class=\"p\">.<\/span><span class=\"nx\">error<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"na\">Error<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span><span class=\"nx\">state<\/span><span class=\"p\">.<\/span><span class=\"nx\">error<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p&gt;<\/span><span class=\"err\">}\n<\/span>      <span class=\"p\">{<\/span><span class=\"nx\">state<\/span><span class=\"p\">.<\/span><span class=\"nx\">data<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">pre<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"nx\">JSON<\/span><span class=\"p\">.<\/span><span class=\"nf\">stringify<\/span><span class=\"p\">(<\/span><span class=\"nx\">state<\/span><span class=\"p\">.<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"kc\">null<\/span><span class=\"p\">,<\/span> <span class=\"mi\">2<\/span><span class=\"p\">)}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/pre&gt;<\/span><span class=\"err\">}\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span>  <span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0645\u0646\u0637\u0642 \u062f\u0648\u0644\u062a \u0631\u0627 \u0645\u062a\u0645\u0631\u06a9\u0632 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u0646\u062a\u0642\u0627\u0644 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0631\u0627 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_9_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%82%D9%84%D8%A7%D8%A8_%D8%B3%D9%81%D8%A7%D8%B1%D8%B4%DB%8C_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%AA%D8%B9%D8%A7%D9%85%D9%84_%D8%A8%D8%A7_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7%DB%8C_%D9%85%D8%AD%D9%84%DB%8C\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 9: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0644\u0627\u0628 \u0633\u0641\u0627\u0631\u0634\u06cc \u0628\u0631\u0627\u06cc \u062a\u0639\u0627\u0645\u0644 \u0628\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0645\u062d\u0644\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0627 \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u0622\u0646 \u0628\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u062d\u0644\u06cc \u060c \u062d\u0627\u0644\u062a \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0645\u062c\u062f\u062f \u062f\u0631 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0627\u062f\u0627\u0645\u0647 \u062f\u0647\u06cc\u062f. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 <code>useState<\/code> \u062f\u0631 \u062a\u0631\u06a9\u06cc\u0628 \u0628\u0627 <code>useEffect<\/code> \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u06cc\u0627\u0628\u06cc \u0628\u0647 \u0627\u06cc\u0646 \u06cc\u06a9\u067e\u0627\u0631\u0686\u0647 \u062f\u0631 \u0642\u0644\u0627\u0628 \u0633\u0641\u0627\u0631\u0634\u06cc.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">theme<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setTheme<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">toggleTheme<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">newTheme<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">theme<\/span> <span class=\"o\">===<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span> <span class=\"p\">?<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">dark<\/span><span class=\"dl\">'<\/span> <span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">setTheme<\/span><span class=\"p\">(<\/span><span class=\"nx\">newTheme<\/span><span class=\"p\">);<\/span>\n  <span class=\"nx\">localStorage<\/span><span class=\"p\">.<\/span><span class=\"nf\">setItem<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">theme<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"nx\">newTheme<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%87%D9%85%DA%AF%D8%A7%D9%85_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%B0%D8%AE%DB%8C%D8%B1%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D9%85%D8%AD%D9%84%DB%8C\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0633\u0627\u0632\u06cc \u0645\u062d\u0644\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u062d\u0627\u0644\u062a \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u0631\u0627 \u0628\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u062d\u0644\u06cc \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">useLocalStorage<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">key<\/span><span class=\"p\">,<\/span> <span class=\"nx\">initialValue<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">value<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setValue<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">try<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">localValue<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">window<\/span><span class=\"p\">.<\/span><span class=\"nx\">localStorage<\/span><span class=\"p\">.<\/span><span class=\"nf\">getItem<\/span><span class=\"p\">(<\/span><span class=\"nx\">key<\/span><span class=\"p\">);<\/span>\n      <span class=\"k\">return<\/span> <span class=\"nx\">localValue<\/span> <span class=\"p\">?<\/span> <span class=\"nx\">JSON<\/span><span class=\"p\">.<\/span><span class=\"nf\">parse<\/span><span class=\"p\">(<\/span><span class=\"nx\">localValue<\/span><span class=\"p\">)<\/span> <span class=\"p\">:<\/span> <span class=\"nx\">initialValue<\/span><span class=\"p\">;<\/span>\n    <span class=\"p\">}<\/span> <span class=\"k\">catch <\/span><span class=\"p\">(<\/span><span class=\"nx\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n      <span class=\"k\">return<\/span> <span class=\"nx\">initialValue<\/span><span class=\"p\">;<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"p\">});<\/span>\n\n  <span class=\"nf\">useEffect<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nb\">window<\/span><span class=\"p\">.<\/span><span class=\"nx\">localStorage<\/span><span class=\"p\">.<\/span><span class=\"nf\">setItem<\/span><span class=\"p\">(<\/span><span class=\"nx\">key<\/span><span class=\"p\">,<\/span> <span class=\"nx\">JSON<\/span><span class=\"p\">.<\/span><span class=\"nf\">stringify<\/span><span class=\"p\">(<\/span><span class=\"nx\">value<\/span><span class=\"p\">));<\/span>\n  <span class=\"p\">},<\/span> <span class=\"p\">[<\/span><span class=\"nx\">key<\/span><span class=\"p\">,<\/span> <span class=\"nx\">value<\/span><span class=\"p\">]);<\/span>\n\n  <span class=\"k\">return<\/span> <span class=\"p\">[<\/span><span class=\"nx\">value<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setValue<\/span><span class=\"p\">];<\/span>\n<span class=\"p\">};<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">App<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">theme<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setTheme<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useLocalStorage<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">theme<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"kd\">function<\/span> <span class=\"nf\">toggleTheme<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setTheme<\/span><span class=\"p\">(<\/span><span class=\"nx\">theme<\/span> <span class=\"o\">===<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span> <span class=\"p\">?<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">dark<\/span><span class=\"dl\">'<\/span> <span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">light<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Current<\/span> <span class=\"nx\">Theme<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span><span class=\"nx\">theme<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">toggleTheme<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Toggle<\/span> <span class=\"nx\">Theme<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span>  <span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062f\u0648\u0644\u062a \u0634\u0645\u0627 \u0628\u062f\u0648\u0646 \u0645\u062f\u0627\u062e\u0644\u0647 \u062f\u0633\u062a\u06cc \u062f\u0631 \u062c\u0644\u0633\u0627\u062a \u0627\u062f\u0627\u0645\u0647 \u0645\u06cc \u06cc\u0627\u0628\u062f.<\/p>\n<blockquote>\n<p>\u06cc\u0627\u062f \u0628\u06af\u06cc\u0631\u06cc\u062f \u06a9\u0647 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0628\u0631\u0646\u0627\u0645\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u062a\u0627\u0628 \u0631\u0627 \u0628\u0633\u0627\u0632\u06cc\u062f<\/p>\n<\/blockquote>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_10_%D8%A8%D8%A7%D8%B2%D9%86%D9%88%DB%8C%D8%B3%DB%8C_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7%DB%8C_%D8%AD%D8%A7%D9%84%D8%AA_%D8%A8%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%88%D8%B1%D9%88%D8%AF%DB%8C_%D9%87%D8%A7%DB%8C_%DA%A9%D9%86%D8%AA%D8%B1%D9%84_%D8%B4%D8%AF%D9%87\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 10: \u0628\u0627\u0632\u0646\u0648\u06cc\u0633\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062d\u0627\u0644\u062a \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0634\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0646\u06af\u0627\u0645 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0634\u062f\u0647 (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0641\u0631\u0645 \u0647\u0627) \u060c \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0635\u062d\u06cc\u062d \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0648\u0631\u0648\u062f\u06cc \u06a9\u0627\u0631\u0628\u0631 \u062e\u0648\u062f\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f <code>onChange<\/code> \u0631\u0648\u06cc\u062f\u0627\u062f<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">formData<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setFormData<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">({<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">''<\/span><span class=\"p\">,<\/span> <span class=\"na\">email<\/span><span class=\"p\">:<\/span> <span class=\"dl\">''<\/span> <span class=\"p\">});<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">handleChange<\/span><span class=\"p\">(<\/span><span class=\"nx\">event<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setFormData<\/span><span class=\"p\">({<\/span> <span class=\"p\">[<\/span><span class=\"nx\">event<\/span><span class=\"p\">.<\/span><span class=\"nx\">target<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">]:<\/span> <span class=\"nx\">event<\/span><span class=\"p\">.<\/span><span class=\"nx\">target<\/span><span class=\"p\">.<\/span><span class=\"nx\">value<\/span> <span class=\"p\">});<\/span> <span class=\"c1\">\/\/ Overwrites other fields<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0647\u0645\u06cc\u0634\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0648\u062c\u0648\u062f \u0631\u0627 \u0628\u0631\u0627\u06cc \u062d\u0641\u0638 \u0632\u0645\u06cc\u0646\u0647 \u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u067e\u062e\u0634 \u06a9\u0646\u06cc\u062f.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D9%85%D9%82%D8%A7%D8%AF%DB%8C%D8%B1_%D9%85%D9%88%D8%AC%D9%88%D8%AF_%D8%B1%D8%A7_%D9%BE%D8%AE%D8%B4_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0648\u062c\u0648\u062f \u0631\u0627 \u067e\u062e\u0634 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">handleChange<\/span><span class=\"p\">(<\/span><span class=\"nx\">event<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">name<\/span><span class=\"p\">,<\/span> <span class=\"nx\">value<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">event<\/span><span class=\"p\">.<\/span><span class=\"nx\">target<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">setFormData<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevData<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span> <span class=\"p\">...<\/span><span class=\"nx\">prevData<\/span><span class=\"p\">,<\/span> <span class=\"p\">[<\/span><span class=\"nx\">name<\/span><span class=\"p\">]:<\/span> <span class=\"nx\">value<\/span> <span class=\"p\">}));<\/span> <span class=\"c1\">\/\/ Preserves other fields<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u062a\u0645\u0627\u0645 \u0632\u0645\u06cc\u0646\u0647 \u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f \u062f\u0631 \u0641\u0631\u0645 \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0641\u0642\u0637 \u0645\u0648\u0631\u062f \u0645\u0631\u0628\u0648\u0637\u0647 \u0631\u0627 \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc \u06a9\u0646\u0646\u062f \u060c \u062f\u0633\u062a \u0646\u062e\u0648\u0631\u062f\u0647 \u0628\u0627\u0642\u06cc \u0645\u06cc \u0645\u0627\u0646\u0646\u062f.<\/p>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_11_%D8%B9%D8%AF%D9%85_%D8%A7%D9%86%D8%AC%D8%A7%D9%85_%DA%86%DA%A9_%D9%87%D8%A7%DB%8C_%D8%A8%D8%B1%D8%A7%D8%A8%D8%B1%DB%8C_%D8%AF%D8%B1_%D9%87%D9%86%DA%AF%D8%A7%D9%85_%D8%A8%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%AF%D9%88%D9%84%D8%AA\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 11: \u0639\u062f\u0645 \u0627\u0646\u062c\u0627\u0645 \u0686\u06a9 \u0647\u0627\u06cc \u0628\u0631\u0627\u0628\u0631\u06cc \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0628\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u062f\u0648\u0644\u062a<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>React \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0628\u0631\u0631\u0633\u06cc \u0646\u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u062d\u0627\u0644\u062a \u062c\u062f\u06cc\u062f \u0642\u0628\u0644 \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u0631\u0646\u062f\u0631 \u062f\u0648\u0628\u0627\u0631\u0647 \u0628\u0627 \u062d\u0627\u0644\u062a \u0642\u062f\u06cc\u0645\u06cc \u0645\u062a\u0641\u0627\u0648\u062a \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631. \u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc \u060c \u0628\u0647 \u0637\u0648\u0631 \u062f\u0633\u062a\u06cc \u0645\u0642\u062f\u0627\u0631 \u062c\u062f\u06cc\u062f \u0631\u0627 \u0628\u0627 \u0648\u0636\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc \u0645\u0642\u0627\u06cc\u0633\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">count<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCount<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCount<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCount<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Triggers a re-render even if `newCount === count`<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%DB%8C%DA%A9_%D8%A8%D8%B1%D8%B1%D8%B3%DB%8C_%D8%A8%D8%B1%D8%A7%D8%A8%D8%B1%DB%8C_%D8%A7%D8%B6%D8%A7%D9%81%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u06cc\u06a9 \u0628\u0631\u0631\u0633\u06cc \u0628\u0631\u0627\u0628\u0631\u06cc \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">function<\/span> <span class=\"nf\">updateCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCount<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"nx\">newCount<\/span> <span class=\"o\">!==<\/span> <span class=\"nx\">count<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCount<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ Only updates state if the value changes<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>\u0627\u06cc\u0646 \u0627\u0645\u0631 \u0645\u0627\u0646\u0639 \u0627\u0632 \u062a\u0648\u0644\u06cc\u062f \u0645\u062c\u062f\u062f \u0645\u062c\u062f\u062f \u0648 \u0628\u0647\u0628\u0648\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_12_%D9%87%D9%85%DB%8C%D8%B4%D9%87_%D8%A7%D8%B2_Redux_%DB%8C%D8%A7_%D8%B2%D9%85%DB%8C%D9%86%D9%87_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B0%D8%AE%DB%8C%D8%B1%D9%87_%D8%AF%D8%A7%D8%AF%D9%87_%D9%87%D8%A7_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 12: \u0647\u0645\u06cc\u0634\u0647 \u0627\u0632 Redux \u06cc\u0627 \u0632\u0645\u06cc\u0646\u0647 \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u0647\u0627\u06cc UI \u0645\u0648\u0642\u062a (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0646\/\u067e\u0646\u0647\u0627\u0646 \u06a9\u0631\u062f\u0646 \u0645\u0627\u0698\u0627\u0644 \u0647\u0627 \u060c \u06a9\u0634\u0648\u06cc\u06cc \u062f\u0631 \u062d\u0627\u0644 \u062c\u0627\u0628\u062c\u0627\u06cc\u06cc) \u060c \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>useState<\/code> \u0628\u0647 \u062c\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u06cc\u0646 \u062d\u0627\u0644\u062a\u0647\u0627 \u062f\u0631 \u0633\u0637\u062d \u062c\u0647\u0627\u0646 (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u062f\u0631 \u0631\u062f\u0648\u06a9\u0633 \u06cc\u0627 \u0645\u062a\u0646). \u0627\u06cc\u0646 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u062d\u0627\u0644\u062a \u062c\u0647\u0627\u0646\u06cc \u0634\u0645\u0627 \u062a\u0645\u06cc\u0632 \u0648 \u0645\u062a\u0645\u0631\u06a9\u0632 \u0628\u0631 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u06af\u0633\u062a\u0631\u062f\u0647 \u0628\u0631\u0646\u0627\u0645\u0647 \u0628\u0627\u0634\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"c1\">\/\/ Storing modal visibility in Redux or Context is Not good<\/span>\n<span class=\"nf\">dispatch<\/span><span class=\"p\">({<\/span> <span class=\"na\">type<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">SET_MODAL_VISIBLE<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">payload<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span> <span class=\"p\">});<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D8%AF%D9%88%D9%84%D8%AA_%D9%85%D8%AD%D9%84%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u062f\u0648\u0644\u062a \u0645\u062d\u0644\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">isModalOpen<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setIsModalOpen<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">openModal<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setIsModalOpen<\/span><span class=\"p\">(<\/span><span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">closeModal<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setIsModalOpen<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">openModal<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Open<\/span> <span class=\"nx\">Modal<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>    <span class=\"p\">{<\/span><span class=\"nx\">isModalOpen<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Modal<\/span> <span class=\"nx\">onClose<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">closeModal<\/span><span class=\"p\">}<\/span> <span class=\"sr\">\/&gt;<\/span><span class=\"err\">}\n<\/span>  <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span><span class=\"p\">);<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_13_%D8%B9%D8%AF%D9%85_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D9%86%D8%AD%D9%88_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF_Updater_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B9%D9%85%D9%84%DB%8C%D8%A7%D8%AA_Async\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 13: \u0639\u062f\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0646\u062d\u0648 \u0639\u0645\u0644\u06a9\u0631\u062f Updater \u0628\u0631\u0627\u06cc \u0639\u0645\u0644\u06cc\u0627\u062a Async<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0646\u06af\u0627\u0645 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u062d\u0627\u0644\u062a \u0628\u0631 \u0627\u0633\u0627\u0633 \u0639\u0645\u0644\u06cc\u0627\u062a \u0646\u0627\u0647\u0645\u0632\u0645\u0627\u0646 (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0648\u0627\u06a9\u0634\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627) \u060c \u0647\u0645\u06cc\u0634\u0647 \u0627\u0632 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u062a\u0627 \u0627\u0637\u0645\u06cc\u0646\u0627\u0646 \u062d\u0627\u0635\u0644 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0628\u0627 \u0622\u062e\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setData<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">([]);<\/span>\n\n<span class=\"k\">async<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">fetchData<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">response<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">https:\/\/api.example.com\/data<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">newData<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">response<\/span><span class=\"p\">.<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\n  <span class=\"nf\">setData<\/span><span class=\"p\">([...<\/span><span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"p\">...<\/span><span class=\"nx\">newData<\/span><span class=\"p\">]);<\/span> <span class=\"c1\">\/\/ Uses stale `data`<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%D9%86%D8%AD%D9%88_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u0646\u062d\u0648 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"k\">async<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">fetchData<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">response<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nf\">fetch<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">https:\/\/api.example.com\/data<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">newData<\/span> <span class=\"o\">=<\/span> <span class=\"k\">await<\/span> <span class=\"nx\">response<\/span><span class=\"p\">.<\/span><span class=\"nf\">json<\/span><span class=\"p\">();<\/span>\n  <span class=\"nf\">setData<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevData<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">[...<\/span><span class=\"nx\">prevData<\/span><span class=\"p\">,<\/span> <span class=\"p\">...<\/span><span class=\"nx\">newData<\/span><span class=\"p\">]);<\/span> <span class=\"c1\">\/\/ Always uses the latest state<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_14_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D9%86%DA%A9%D8%B1%D8%AF%D9%86_useState_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%A7%D8%B1%D8%A7%D8%A6%D9%87_%D9%85%D8%B4%D8%B1%D9%88%D8%B7_%D8%A8%D8%A7_%D9%85%D8%A7%D8%B4%DB%8C%D9%86_%D9%87%D8%A7%DB%8C_%D8%AF%D9%88%D9%84%D8%AA%DB%8C\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 14: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u06a9\u0631\u062f\u0646 <code>useState<\/code> \u0628\u0631\u0627\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u0634\u0631\u0648\u0637 \u0628\u0627 \u0645\u0627\u0634\u06cc\u0646 \u0647\u0627\u06cc \u062f\u0648\u0644\u062a\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646 \u0647\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 UI (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0641\u0631\u0645 \u0647\u0627\u06cc \u0686\u0646\u062f \u0645\u0631\u062d\u0644\u0647 \u0627\u06cc \u060c \u062c\u0627\u062f\u0648\u06af\u0631\u0627\u0646) \u060c \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>useState<\/code> \u0628\u0631\u0627\u06cc \u0627\u062c\u0631\u0627\u06cc \u06cc\u06a9 \u062f\u0633\u062a\u06af\u0627\u0647 \u062f\u0648\u0644\u062a\u06cc \u0633\u0627\u062f\u0647. \u0627\u06cc\u0646 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u0645\u0646\u0637\u0642 \u0634\u0645\u0627 \u0633\u0627\u0632\u0645\u0627\u0646 \u06cc\u0627\u0641\u062a\u0647 \u0648 \u0642\u0627\u0628\u0644 \u067e\u06cc\u0634 \u0628\u06cc\u0646\u06cc \u0628\u0627\u0634\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">step<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setStep<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\n\n<span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n    <span class=\"p\">{<\/span><span class=\"nx\">step<\/span> <span class=\"o\">===<\/span> <span class=\"mi\">1<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Step1<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">}<\/span>\n    <span class=\"p\">{<\/span><span class=\"nx\">step<\/span> <span class=\"o\">===<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Step2<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">}<\/span>\n    <span class=\"p\">{<\/span><span class=\"nx\">step<\/span> <span class=\"o\">===<\/span> <span class=\"mi\">3<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Step3<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">}<\/span>\n  <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span><span class=\"p\">);<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A7%D8%B2_%DB%8C%DA%A9_%D8%AF%D8%B3%D8%AA%DA%AF%D8%A7%D9%87_%D8%AF%D9%88%D9%84%D8%AA%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0627\u0632 \u06cc\u06a9 \u062f\u0633\u062a\u06af\u0627\u0647 \u062f\u0648\u0644\u062a\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062f\u0633\u062a\u06af\u0627\u0647 \u062d\u0627\u0644\u062a \u060c \u0647\u0631 \u0645\u0631\u062d\u0644\u0647 \u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u062c\u0632\u0621 \u0646\u0642\u0634\u0647 \u0628\u0631\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">steps<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">Step1<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Step2<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">Step3<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">];<\/span>\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">currentStep<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCurrentStep<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">nextStep<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCurrentStep<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevStep<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nb\">Math<\/span><span class=\"p\">.<\/span><span class=\"nf\">min<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevStep<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"nx\">steps<\/span><span class=\"p\">.<\/span><span class=\"nx\">length<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">));<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">prevStep<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setCurrentStep<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevStep<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nb\">Math<\/span><span class=\"p\">.<\/span><span class=\"nf\">max<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevStep<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"mi\">0<\/span><span class=\"p\">));<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n    <span class=\"p\">{<\/span><span class=\"nx\">steps<\/span><span class=\"p\">[<\/span><span class=\"nx\">currentStep<\/span><span class=\"p\">]}<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">prevStep<\/span><span class=\"p\">}<\/span> <span class=\"nx\">disabled<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">currentStep<\/span> <span class=\"o\">===<\/span> <span class=\"mi\">0<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"nx\">Previous<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">nextStep<\/span><span class=\"p\">}<\/span> <span class=\"nx\">disabled<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">currentStep<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">steps<\/span><span class=\"p\">.<\/span><span class=\"nx\">length<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"nx\">Next<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>  <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span><span class=\"p\">);<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<hr\/>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%D8%B4%D8%AA%D8%A8%D8%A7%D9%87_15_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D8%AF%D8%B3%D8%AA%DB%8C_%D8%AE%D8%B5%D9%88%D8%B5%DB%8C%D8%A7%D8%AA_%D8%AA%D9%88_%D8%AF%D8%B1_%D8%AA%D9%88\"><\/span>\n<p>  \u0627\u0634\u062a\u0628\u0627\u0647 15: \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u062f\u0633\u062a\u06cc \u062e\u0635\u0648\u0635\u06cc\u0627\u062a \u062a\u0648 \u062f\u0631 \u062a\u0648<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0647\u0646\u06af\u0627\u0645 \u0645\u062f\u06cc\u0631\u06cc\u062a \u062d\u0627\u0644\u062a \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062a\u0648 \u062f\u0631 \u062a\u0648 (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644 \u060c \u0627\u0634\u06cc\u0627\u0621 \u06cc\u0627 \u0622\u0631\u0627\u06cc\u0647 \u0647\u0627\u06cc \u0639\u0645\u06cc\u0642\u0627\u064b \u062a\u0648 \u062f\u0631 \u062a\u0648) \u060c \u0627\u0632 \u06cc\u0627\u0631\u0627\u0646 \u0646\u0627\u067e\u0630\u06cc\u0631\u06cc \u0645\u0627\u0646\u0646\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>immer<\/code> \u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u0647 \u062a\u0631 \u06a9\u0631\u062f\u0646 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627 \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u062d\u0627\u0644\u062a \u062e\u0648\u062f \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u0627\u067e\u0630\u06cc\u0631 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">user<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setUser<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">({<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">John<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">address<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">city<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">New York<\/span><span class=\"dl\">'<\/span> <span class=\"p\">}<\/span> <span class=\"p\">});<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateCity<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCity<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setUser<\/span><span class=\"p\">(<\/span><span class=\"nx\">prevUser<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">({<\/span>\n    <span class=\"p\">...<\/span><span class=\"nx\">prevUser<\/span><span class=\"p\">,<\/span>\n    <span class=\"na\">address<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"p\">...<\/span><span class=\"nx\">prevUser<\/span><span class=\"p\">.<\/span><span class=\"nx\">address<\/span><span class=\"p\">,<\/span> <span class=\"na\">city<\/span><span class=\"p\">:<\/span> <span class=\"nx\">newCity<\/span> <span class=\"p\">},<\/span> <span class=\"c1\">\/\/ Tedious and error-prone<\/span>\n  <span class=\"p\">}));<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B1%D8%A7%D9%87_%D8%AD%D9%84_%D8%A8%D8%B1%D8%A7%DB%8C_%D8%B3%D8%A7%D8%AF%DA%AF%DB%8C_%D8%A7%D8%B2_Immer_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0631\u0627\u0647 \u062d\u0644: \u0628\u0631\u0627\u06cc \u0633\u0627\u062f\u06af\u06cc \u0627\u0632 Immer \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h6><span class=\"ez-toc-section\" id=\"%D9%86%D8%B5%D8%A8_%DA%A9%D8%B1%D8%AF%D9%86_immer_%DA%A9%D8%AA%D8%A7%D8%A8%D8%AE%D8%A7%D9%86%D9%87_npm_install_immer_%D9%88_%D8%A8%D9%87_%D8%B1%D9%88%D8%B2%D8%B1%D8%B3%D8%A7%D9%86%DB%8C_%D9%87%D8%A7%DB%8C_%D8%AA%D9%88_%D8%AF%D8%B1_%D8%AA%D9%88_%D8%B1%D8%A7_%D8%B3%D8%A7%D8%AF%D9%87_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  \u0646\u0635\u0628 \u06a9\u0631\u062f\u0646 <code>immer<\/code> \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 (<code>npm install immer<\/code>) \u0648 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc \u062a\u0648 \u062f\u0631 \u062a\u0648 \u0631\u0627 \u0633\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"k\">import<\/span> <span class=\"nx\">produce<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">immer<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\n\n<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">user<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setUser<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">({<\/span> <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">John<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"na\">address<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span> <span class=\"na\">city<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">New York<\/span><span class=\"dl\">'<\/span> <span class=\"p\">}<\/span> <span class=\"p\">});<\/span>\n\n<span class=\"kd\">function<\/span> <span class=\"nf\">updateCity<\/span><span class=\"p\">(<\/span><span class=\"nx\">newCity<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">setUser<\/span><span class=\"p\">(<\/span>\n    <span class=\"nf\">produce<\/span><span class=\"p\">(<\/span><span class=\"nx\">draft<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">draft<\/span><span class=\"p\">.<\/span><span class=\"nx\">address<\/span><span class=\"p\">.<\/span><span class=\"nx\">city<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">newCity<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ Mutate draft immutably<\/span>\n    <span class=\"p\">})<\/span>\n  <span class=\"p\">);<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0631\u0627 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%A8%D8%A7_%D9%85%D9%86_%D8%A7%D8%B1%D8%AA%D8%A8%D8%A7%D8%B7_%D8%A8%D8%B1%D9%82%D8%B1%D8%A7%D8%B1_%DA%A9%D9%86%DB%8C%D8%AF\"><\/span>\n<p>  <strong>\u0628\u0627 \u0645\u0646 \u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0631\u0642\u0631\u0627\u0631 \u06a9\u0646\u06cc\u062f<\/strong><br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0647\u0648\u06a9 Usestate \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u062a\u062f\u0627\u0648\u0644 \u062a\u0631\u06cc\u0646 \u0642\u0644\u0627\u0628 \u062f\u0631 React \u0627\u0633\u062a \u060c \u0627\u0645\u0627 \u0686\u0646\u062f \u0627\u0634\u062a\u0628\u0627\u0647 \u0638\u0631\u06cc\u0641 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u06af\u0627\u0646 \u0627\u063a\u0644\u0628 \u0645\u0631\u062a\u06a9\u0628 \u0645\u06cc \u0634\u0648\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u060c \u0634\u0645\u0627 \u06cc\u0627\u062f \u062e\u0648\u0627\u0647\u06cc\u062f \u06af\u0631\u0641\u062a \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u06cc\u062f \u0648 \u0645\u0646\u0637\u0642 \u062d\u0627\u0644\u062a \u0628\u0647\u062a\u0631\u06cc \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f. \u0627\u0634\u062a\u0628\u0627\u0647 1: \u0641\u0631\u0636 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0628\u0647 \u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0647\u0627\u06cc SetState \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0648\u0636\u0639\u06cc\u062a \u0639\u0645\u0644\u06a9\u0631\u062f &hellip;<\/p>\n","protected":false},"author":2,"featured_media":103661,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/media2.dev.to\/dynamic\/image\/width=1000,height=500,fit=cover,gravity=auto,format=auto\/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fzzoz7freyz8ww4ra75fi.png","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-103660","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/103660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=103660"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/103660\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/103661"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=103660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=103660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=103660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}