{"id":90039,"date":"2024-12-27T06:22:40","date_gmt":"2024-12-27T02:52:40","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/"},"modified":"2024-12-27T06:22:40","modified_gmt":"2024-12-27T02:52:40","slug":"hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/","title":{"rendered":"Hongmeng Next State Management V2 &#8211; \u062e\u0644\u0627\u0635\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 @Once Initialization"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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=\"\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628\"><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: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#1_%D8%A8%D8%B1%D8%B1%D8%B3%DB%8C_%D8%A7%D8%AC%D9%85%D8%A7%D9%84%DB%8C\" >1. \u0628\u0631\u0631\u0633\u06cc \u0627\u062c\u0645\u0627\u0644\u06cc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#2_%D8%AF%D8%B3%D8%AA%D9%88%D8%B1%D8%A7%D9%84%D8%B9%D9%85%D9%84_%D9%82%D9%88%D8%A7%D9%86%DB%8C%D9%86_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AF%DA%A9%D9%88%D8%B1%D8%A7%D8%AA%D9%88%D8%B1%D9%87%D8%A7\" >2. \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631\u0647\u0627<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#1_Once_%D8%AF%DA%A9%D9%88%D8%B1%D8%A7%D8%AA%D9%88%D8%B1_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1\" >(1) @Once \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631 \u0645\u062a\u063a\u06cc\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#2_%D9%85%D8%AD%D8%AF%D9%88%D8%AF%DB%8C%D8%AA_%D9%87%D8%A7\" >(2) \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627<\/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\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#3_%D8%B3%D9%86%D8%A7%D8%B1%DB%8C%D9%88%D9%87%D8%A7%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\" >3. \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\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-6\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#1_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1%D9%87%D8%A7_%D9%81%D9%82%D8%B7_%DB%8C%DA%A9_%D8%A8%D8%A7%D8%B1_%D9%85%D9%82%D8%AF%D8%A7%D8%B1%D8%AF%D9%87%DB%8C_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D9%88_%D9%87%D9%85%DA%AF%D8%A7%D9%85_%D9%85%DB%8C_%D8%B4%D9%88%D9%86%D8%AF\" >(1) \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0648 \u0647\u0645\u06af\u0627\u0645 \u0645\u06cc \u0634\u0648\u0646\u062f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nabfollower.com\/blog\/hongmeng-next-state-management-v2-%d8%ae%d9%84%d8%a7%d8%b5%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-once-initialization\/#2_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1_Param_%D8%B1%D8%A7_%D8%A8%D9%87_%D8%B5%D9%88%D8%B1%D8%AA_%D9%85%D8%AD%D9%84%DB%8C_%D8%AA%D8%BA%DB%8C%DB%8C%D8%B1_%D8%AF%D9%87%DB%8C%D8%AF\" >(2) \u0645\u062a\u063a\u06cc\u0631 @Param \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062d\u0644\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1_%D8%A8%D8%B1%D8%B1%D8%B3%DB%8C_%D8%A7%D8%AC%D9%85%D8%A7%D9%84%DB%8C\"><\/span>\n<p>  1. \u0628\u0631\u0631\u0633\u06cc \u0627\u062c\u0645\u0627\u0644\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631 @Once \u0628\u0631\u0627\u06cc \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0648\u0631\u0648\u062f\u06cc \u062e\u0627\u0631\u062c\u06cc \u0631\u0627 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u062f\u0631 \u062d\u06cc\u0646 \u062a\u0646\u0638\u06cc\u0645 \u0627\u0648\u0644\u06cc\u0647 \u0647\u0645\u06af\u0627\u0645\u200c\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u0628\u0627\u06cc\u062f \u0628\u0627 @Param \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f \u0648 \u0628\u0631 \u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 @Param \u062a\u0623\u062b\u06cc\u0631 \u0646\u0645\u06cc \u06af\u0630\u0627\u0631\u062f. \u0645\u062a\u063a\u06cc\u0631 Param \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062d\u0644\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"2_%D8%AF%D8%B3%D8%AA%D9%88%D8%B1%D8%A7%D9%84%D8%B9%D9%85%D9%84_%D9%82%D9%88%D8%A7%D9%86%DB%8C%D9%86_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87_%D8%A7%D8%B2_%D8%AF%DA%A9%D9%88%D8%B1%D8%A7%D8%AA%D9%88%D8%B1%D9%87%D8%A7\"><\/span>\n<p>  2. \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631\u0647\u0627<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Once_%D8%AF%DA%A9%D9%88%D8%B1%D8%A7%D8%AA%D9%88%D8%B1_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1\"><\/span>\n<p>  (1) @Once \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631 \u0645\u062a\u063a\u06cc\u0631<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<strong>\u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631<\/strong>: \u0647\u06cc\u0686\u06a9\u062f\u0627\u0645<\/li>\n<li>\n<strong>\u0634\u0631\u0627\u06cc\u0637 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<\/strong>: \u0628\u0647 \u062a\u0646\u0647\u0627\u06cc\u06cc \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u06cc\u0633\u062a \u0648 \u0628\u0627\u06cc\u062f \u0628\u0627 \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631 @Param \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2_%D9%85%D8%AD%D8%AF%D9%88%D8%AF%DB%8C%D8%AA_%D9%87%D8%A7\"><\/span>\n<p>  (2) \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>@Once \u0641\u0642\u0637 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u0633\u0641\u0627\u0631\u0634\u06cc \u062a\u0632\u0626\u06cc\u0646 \u0634\u062f\u0647 \u0628\u0627 @ComponentV2 \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0633\u062a \u0648 \u0641\u0642\u0637 \u0628\u0627 @Param \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0633\u062a. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:\n<\/li>\n<\/ul>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">CompA<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">onceParam<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">onceParam<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u6b63\u786e\u7528\u6cd5<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">onceStr<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Once<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u9519\u8bef\u7528\u6cd5\uff0c@Once\u65e0\u6cd5\u5355\u72ec\u4f7f\u7528<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Local<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">onceLocal<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">onceLocal<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u9519\u8bef\u7528\u6cd5\uff0c@Once\u4e0d\u80fd\u4e0e@Local\u4e00\u8d77\u4f7f\u7528<\/span>\n<span class=\"p\">}<\/span>\n<span class=\"p\">@<\/span><span class=\"nd\">Component<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">Index<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"nx\">onceParam<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">onceParam<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u9519\u8bef\u7528\u6cd5<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<\/div>\n<ul>\n<li>@Once \u0647\u06cc\u0686 \u0631\u0628\u0637\u06cc \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 @Param \u0646\u062f\u0627\u0631\u062f\u060c \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u0633\u0627\u062e\u062a\u0627\u0631 @ComponentV2 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a @Param @Once \u06cc\u0627 @Once @param \u0646\u0648\u0634\u062a.\n<\/li>\n<\/ul>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">CompA<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">param1<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span><span class=\"p\">;<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"nx\">param2<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span><span class=\"p\">;<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"3_%D8%B3%D9%86%D8%A7%D8%B1%DB%8C%D9%88%D9%87%D8%A7%DB%8C_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\"><\/span>\n<p>  3. \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1%D9%87%D8%A7_%D9%81%D9%82%D8%B7_%DB%8C%DA%A9_%D8%A8%D8%A7%D8%B1_%D9%85%D9%82%D8%AF%D8%A7%D8%B1%D8%AF%D9%87%DB%8C_%D8%A7%D9%88%D9%84%DB%8C%D9%87_%D9%88_%D9%87%D9%85%DA%AF%D8%A7%D9%85_%D9%85%DB%8C_%D8%B4%D9%88%D9%86%D8%AF\"><\/span>\n<p>  (1) \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0648 \u0647\u0645\u06af\u0627\u0645 \u0645\u06cc \u0634\u0648\u0646\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0631\u0627\u06cc \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627\u06cc\u06cc \u0645\u0646\u0627\u0633\u0628 \u0627\u0633\u062a \u06a9\u0647 \u0627\u0646\u062a\u0638\u0627\u0631 \u0645\u06cc\u200c\u0631\u0648\u062f \u0645\u062a\u063a\u06cc\u0631 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u062f\u0631 \u0637\u0648\u0644 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0628\u0627 \u0645\u0646\u0628\u0639 \u062f\u0627\u062f\u0647 \u0647\u0645\u06af\u0627\u0645 \u0634\u0648\u062f \u0648 \u067e\u0633 \u0627\u0632 \u0622\u0646 \u062f\u06cc\u06af\u0631 \u0628\u0647 \u0647\u0645\u06af\u0627\u0645\u200c\u0633\u0627\u0632\u06cc \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0627\u062f\u0627\u0645\u0647 \u0646\u062f\u0647\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:\n<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">CompA<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">onceParam<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">''<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">build<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nc\">Column<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n        <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`onceParam: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">onceParam<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"p\">}<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"p\">@<\/span><span class=\"nd\">Entry<\/span>\n<span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">CompB<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Local<\/span> <span class=\"nx\">message<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Hello World<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">build<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nc\">Column<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Parent message: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">message<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"nc\">Button<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">change message<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\n       <span class=\"p\">.<\/span><span class=\"nf\">onClick<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">message<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Hello Tomorrow<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\n        <span class=\"p\">})<\/span>\n      <span class=\"nc\">CompA<\/span><span class=\"p\">({<\/span> <span class=\"na\">onceParam<\/span><span class=\"p\">:<\/span> <span class=\"k\">this<\/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<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"2_%D9%85%D8%AA%D8%BA%DB%8C%D8%B1_Param_%D8%B1%D8%A7_%D8%A8%D9%87_%D8%B5%D9%88%D8%B1%D8%AA_%D9%85%D8%AD%D9%84%DB%8C_%D8%AA%D8%BA%DB%8C%DB%8C%D8%B1_%D8%AF%D9%87%DB%8C%D8%AF\"><\/span>\n<p>  (2) \u0645\u062a\u063a\u06cc\u0631 @Param \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062d\u0644\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0648\u0642\u062a\u06cc @Once \u0628\u0627 @Param \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0645\u062d\u062f\u0648\u062f\u06cc\u062a\u06cc \u06a9\u0647 @Param \u0631\u0627 \u0646\u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062d\u0644\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f\u060c \u0628\u0631\u062f\u0627\u0634\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0648 \u0627\u06cc\u0646 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0627\u0639\u062b \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc UI \u0634\u0648\u062f\u060c \u062f\u0631 \u0627\u06cc\u0646 \u0632\u0645\u0627\u0646\u060c \u0645\u0639\u0627\u062f\u0644 @Local \u0627\u0633\u062a\u060c \u0627\u0645\u0627 @Param @Once \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062e\u0627\u0631\u062c\u06cc \u0631\u0627 \u0628\u067e\u0630\u06cc\u0631\u062f \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0648\u0631\u0648\u062f\u06cc \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:\n<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"p\">@<\/span><span class=\"nd\">ObservedV2<\/span>\n<span class=\"kd\">class<\/span> <span class=\"nc\">Info<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Trace<\/span> <span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">constructor<\/span><span class=\"p\">(<\/span><span class=\"nx\">name<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">name<\/span><span class=\"p\">;<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">Child<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"nx\">onceParamNum<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Param<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Once<\/span> <span class=\"p\">@<\/span><span class=\"nd\">Require<\/span> <span class=\"nx\">onceParamInfo<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Info<\/span><span class=\"p\">;<\/span>\n  <span class=\"nf\">build<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nc\">Column<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Child onceParamNum: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">onceParamNum<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Child onceParamInfo: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">onceParamInfo<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"nc\">Button<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">changeOnceParamNum<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\n       <span class=\"p\">.<\/span><span class=\"nf\">onClick<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">onceParamNum<\/span><span class=\"o\">++<\/span><span class=\"p\">;<\/span>\n        <span class=\"p\">})<\/span>\n      <span class=\"nc\">Button<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">changeParamInfo<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\n       <span class=\"p\">.<\/span><span class=\"nf\">onClick<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">onceParamInfo<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Info<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">Cindy<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\n        <span class=\"p\">})<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"p\">@<\/span><span class=\"nd\">Entry<\/span>\n<span class=\"p\">@<\/span><span class=\"nd\">ComponentV2<\/span>\n<span class=\"nx\">struct<\/span> <span class=\"nx\">Index<\/span> <span class=\"p\">{<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Local<\/span> <span class=\"nx\">localNum<\/span><span class=\"p\">:<\/span> <span class=\"kr\">number<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"p\">;<\/span>\n  <span class=\"p\">@<\/span><span class=\"nd\">Local<\/span> <span class=\"nx\">localInfo<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Info<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Info<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">Tom<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\n  <span class=\"nf\">build<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nc\">Column<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Parent localNum: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localNum<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"nc\">Text<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Parent localInfo: <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localInfo<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span><span class=\"p\">}<\/span><span class=\"s2\">`<\/span><span class=\"p\">)<\/span>\n      <span class=\"nc\">Button<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">changeLocalNum<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\n       <span class=\"p\">.<\/span><span class=\"nf\">onClick<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localNum<\/span><span class=\"o\">++<\/span><span class=\"p\">;<\/span>\n        <span class=\"p\">})<\/span>\n      <span class=\"nc\">Button<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">changeLocalInfo<\/span><span class=\"dl\">\"<\/span><span class=\"p\">)<\/span>\n       <span class=\"p\">.<\/span><span class=\"nf\">onClick<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localInfo<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Info<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">Cindy<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\n        <span class=\"p\">})<\/span>\n      <span class=\"nc\">Child<\/span><span class=\"p\">({<\/span>\n        <span class=\"na\">onceParamNum<\/span><span class=\"p\">:<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localNum<\/span><span class=\"p\">,<\/span>\n        <span class=\"na\">onceParamInfo<\/span><span class=\"p\">:<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">localInfo<\/span>\n      <span class=\"p\">})<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. \u0628\u0631\u0631\u0633\u06cc \u0627\u062c\u0645\u0627\u0644\u06cc \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631 @Once \u0628\u0631\u0627\u06cc \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0648\u0631\u0648\u062f\u06cc \u062e\u0627\u0631\u062c\u06cc \u0631\u0627 \u0641\u0642\u0637 \u06cc\u06a9 \u0628\u0627\u0631 \u062f\u0631 \u062d\u06cc\u0646 \u062a\u0646\u0638\u06cc\u0645 \u0627\u0648\u0644\u06cc\u0647 \u0647\u0645\u06af\u0627\u0645\u200c\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. \u0628\u0627\u06cc\u062f \u0628\u0627 @Param \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f \u0648 \u0628\u0631 \u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 @Param \u062a\u0623\u062b\u06cc\u0631 \u0646\u0645\u06cc \u06af\u0630\u0627\u0631\u062f. \u0645\u062a\u063a\u06cc\u0631 Param \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0645\u062d\u0644\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f. 2. \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062f\u06a9\u0648\u0631\u0627\u062a\u0648\u0631\u0647\u0627 (1) @Once &hellip;<\/p>\n","protected":false},"author":2,"featured_media":90040,"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%2Fzqaeufzl1f8ylxqi0cxq.png","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-90039","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\/90039","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=90039"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/90039\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/90040"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=90039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=90039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=90039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}