{"id":95501,"date":"2025-02-01T05:32:48","date_gmt":"2025-02-01T02:02:48","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa\/"},"modified":"2025-02-01T05:32:48","modified_gmt":"2025-02-01T02:02:48","slug":"wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa\/","title":{"rendered":"WTF \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a &#8220;\u0627\u06cc\u0646&#8221; \u0627\u0633\u062a"},"content":{"rendered":"<div data-article-id=\"2253159\" id=\"article-body\">\n<p>\u0627\u0631\u0632\u0634 <code>this<\/code> \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u060c \u0646\u0647 \u062f\u0631 \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0634\u062e\u0635\u0627\u062a ECMAScript \u0622\u0646 \u0631\u0627 &#8220;\u0627\u062a\u0635\u0627\u0644 \u0632\u0645\u0627\u0646&#8221; \u0645\u06cc \u0646\u0627\u0645\u062f. \u0628\u0647 \u0622\u0646 \u0641\u06a9\u0631 \u06a9\u0646\u06cc\u062f \u0645\u0627\u0646\u0646\u062f \u06cc\u06a9 \u0628\u0627\u0632\u06cc \u0633\u06cc\u0628 \u0632\u0645\u06cc\u0646\u06cc \u062f\u0627\u063a \u0647\u0631\u06a9\u0633\u06cc \u06a9\u0647 \u0633\u06cc\u0628 \u0632\u0645\u06cc\u0646\u06cc \u0631\u0627 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f (\u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f) \u0686\u0647 \u0686\u06cc\u0632\u06cc \u0631\u0627 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f <code>this<\/code> \u0645\u06cc \u0634\u0648\u062f<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0627\u0633\u062a \u06a9\u0647 \u0627\u063a\u0644\u0628 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u06af\u0627\u0646 \u0627\u06cc\u0627\u0644\u0627\u062a \u0645\u062a\u062d\u062f\u0647 \u0631\u0627 \u06af\u06cc\u062c \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=\"nx\">user<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\n  <span class=\"na\">name<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">John<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\n  <span class=\"nf\">greet<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"kd\">const<\/span> <span class=\"nx\">sayHi<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nf\">log<\/span><span class=\"p\">(<\/span><span class=\"s2\">`Hi, <\/span><span class=\"p\">${<\/span><span class=\"k\">this<\/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=\"p\">};<\/span>\n    <span class=\"nf\">setTimeout<\/span><span class=\"p\">(<\/span><span class=\"nx\">sayHi<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1000<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">},<\/span>\n<span class=\"p\">};<\/span>\n\n<span class=\"nx\">user<\/span><span class=\"p\">.<\/span><span class=\"nf\">greet<\/span><span class=\"p\">();<\/span> <span class=\"c1\">\/\/ After 1 second: \"Hi, John!\"<\/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>\u062f\u0631 \u0627\u06cc\u0646 \u062d\u0627\u0644\u062a \u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u0641\u0644\u0634 <code>sayHi<\/code> \u062a\u0644\u0647 <code>this<\/code> \u0627\u0632 \u062f\u0627\u0645\u0646\u0647 \u0627\u0637\u0631\u0627\u0641 \u0622\u0646 \u0627\u06af\u0631 \u0628\u0647 \u062c\u0627\u06cc \u0622\u0646 \u0627\u0632 \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0645\u0639\u0645\u0648\u0644\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0647 \u0628\u0648\u062f\u06cc\u0645 \u060c <code>this<\/code> \u0645\u06cc \u062a\u0648\u0627\u0646\u0633\u062a \u06cc\u06a9 \u0634\u06cc\u0621 \u062c\u0647\u0627\u0646\u06cc (\u06cc\u0627 \u062f\u0631 \u062d\u0627\u0644\u062a \u0633\u062e\u062a \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647) \u060c \u0648 <code>this.name<\/code> \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u0628\u0648\u062f \u0627\u06cc\u0647 \u0686\u06cc\u0632 \u062f\u06cc\u06af\u0631\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0647\u0646\u06af\u0627\u0645 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0628\u0647 \u062f\u0646\u0628\u0627\u0644 \u0622\u0646 \u0628\u0627\u0634\u06cc\u062f <code>this<\/code>\u060c \u0628\u0647 JS \u062e\u0648\u0634 \u0622\u0645\u062f\u06cc\u062f!<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 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: #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-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nabfollower.com\/blog\/wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa\/#%D8%AA%D9%88%D8%A7%D8%A8%D8%B9_%D9%81%D9%84%D8%B4_%D9%88_%E2%80%9C%D8%A7%DB%8C%D9%86%E2%80%9D\" >\u062a\u0648\u0627\u0628\u0639 \u0641\u0644\u0634 \u0648 &#8220;\u0627\u06cc\u0646&#8221;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa\/#%D9%85%D8%B4%D8%AE%D8%B5%D8%A7%D8%AA_%D9%85%DB%8C_%DA%AF%D9%88%DB%8C%D8%AF_%E2%80%A6\" >\u0645\u0634\u062e\u0635\u0627\u062a \u0645\u06cc \u06af\u0648\u06cc\u062f &#8230;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nabfollower.com\/blog\/wtf-%d8%af%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a7%db%8c%d9%86-%d8%a7%d8%b3%d8%aa\/#%DB%8C%DA%A9_%D9%85%D8%AB%D8%A7%D9%84_%D8%AF%D9%86%DB%8C%D8%A7%DB%8C_%D9%88%D8%A7%D9%82%D8%B9%DB%8C_%E2%80%A6_%D9%81%DA%A9%D8%B1_%D9%85%DB%8C_%DA%A9%D9%86%D9%85\" >\u06cc\u06a9 \u0645\u062b\u0627\u0644 \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc &#8230; \u0641\u06a9\u0631 \u0645\u06cc \u06a9\u0646\u0645<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%AA%D9%88%D8%A7%D8%A8%D8%B9_%D9%81%D9%84%D8%B4_%D9%88_%E2%80%9C%D8%A7%DB%8C%D9%86%E2%80%9D\"><\/span>\n<p>  \u062a\u0648\u0627\u0628\u0639 \u0641\u0644\u0634 \u0648 &#8220;\u0627\u06cc\u0646&#8221;<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u062a\u0648\u0627\u0628\u0639 \u0641\u0644\u0634 \u062e\u0627\u0635 \u0627\u0633\u062a. \u0628\u0631\u062e\u0644\u0627\u0641 \u06a9\u0627\u0631\u06a9\u0631\u062f\u0647\u0627\u06cc \u0645\u0646\u0638\u0645 \u060c \u0622\u0646\u0647\u0627 \u062e\u0648\u062f\u0634\u0627\u0646 \u0631\u0627 \u0646\u062f\u0627\u0631\u0646\u062f <code>this<\/code>\u0628\u0634\u0631 \u062f\u0631 \u0639\u0648\u0636 \u060c \u0622\u0646\u0647\u0627 \u0628\u0647 \u0627\u0631\u062b \u0645\u06cc \u0628\u0631\u0646\u062f <code>this<\/code> \u0627\u0632 \u062f\u0627\u0645\u0646\u0647 \u0648\u0627\u0644\u062f\u06cc\u0646 \u0622\u0646\u0647\u0627. \u0645\u062b\u0644 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0622\u0646\u0647\u0627 \u0645\u06cc \u06af\u0648\u06cc\u0646\u062f &#8220;\u0647\u0631 \u0622\u0646\u0686\u0647 <code>this<\/code> \u0628\u0647 \u0645\u0639\u0646\u0627\u06cc \u062c\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u0627\u0645 \u060c \u0627\u06cc\u0646 \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062e\u0648\u0627\u0647\u0645 \u06a9\u0631\u062f. &#8220;<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0634\u0645\u0627 \u0631\u0627 \u063a\u0627\u0641\u0644\u06af\u06cc\u0631 \u06a9\u0646\u062f.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">obj<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\n  <span class=\"na\">value<\/span><span class=\"p\">:<\/span> <span class=\"mi\">42<\/span><span class=\"p\">,<\/span>\n  <span class=\"na\">getValue<\/span><span class=\"p\">:<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nf\">log<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">value<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">},<\/span>\n<span class=\"p\">};<\/span>\n\n<span class=\"nx\">obj<\/span><span class=\"p\">.<\/span><span class=\"nf\">getValue<\/span><span class=\"p\">();<\/span> <span class=\"c1\">\/\/ undefined<\/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>\u062d\u062a\u06cc <code>getValue<\/code> \u0631\u0648\u0634\u06cc \u0627\u0633\u062a <code>obj<\/code>\u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u0641\u0644\u0634 \u062f\u0631\u06cc\u0627\u0641\u062a \u0646\u0645\u06cc \u06a9\u0646\u062f <code>this<\/code> \u0627\u0632 \u0634\u06cc \u062f\u0631 \u0639\u0648\u0636 \u060c \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0627\u0631\u062b \u0645\u06cc \u0628\u0631\u062f <code>this<\/code> \u0627\u0632 \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u0641\u0644\u0634 \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u0627\u0633\u062a (\u0627\u062d\u062a\u0645\u0627\u0644\u0627\u064b \u062f\u0627\u0645\u0646\u0647 \u062c\u0647\u0627\u0646\u06cc \u06cc\u0627 \u062f\u0627\u0645\u0646\u0647 \u0645\u0627\u0698\u0648\u0644) \u060c Againg \u0628\u0647 JS \u062e\u0648\u0634 \u0622\u0645\u062f\u06cc\u062f!<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%D9%85%D8%B4%D8%AE%D8%B5%D8%A7%D8%AA_%D9%85%DB%8C_%DA%AF%D9%88%DB%8C%D8%AF_%E2%80%A6\"><\/span>\n<p>  \u0645\u0634\u062e\u0635\u0627\u062a \u0645\u06cc \u06af\u0648\u06cc\u062f &#8230;<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 \u0645\u0634\u062e\u0635\u0627\u062a ECMAScript \u060c \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u060c \u0632\u0645\u06cc\u0646\u0647 \u0627\u0639\u062f\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u0634\u0648\u062f. \u0627\u06cc\u0646 \u0632\u0645\u06cc\u0646\u0647 \u0634\u0627\u0645\u0644 \u06cc\u06a9 \u0627\u0633\u062a <code>ThisBinding<\/code> \u0645\u0624\u0644\u0641\u0647 \u0627\u06cc \u06a9\u0647 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u0686\u0647 \u0686\u06cc\u0632\u06cc <code>this<\/code> \u062f\u0631 \u062f\u0627\u062e\u0644 \u0639\u0645\u0644\u06a9\u0631\u062f \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f \u0642\u0648\u0627\u0646\u06cc\u0646 \u062a\u0646\u0638\u06cc\u0645 <code>ThisBinding<\/code> \u06a9\u0627\u0645\u0644\u0627\u064b \u062e\u0627\u0635 \u0647\u0633\u062a\u0646\u062f:<\/p>\n<ol>\n<li>\u0628\u0631\u0627\u06cc \u062a\u0648\u0627\u0628\u0639 \u0633\u0627\u0632\u0646\u062f\u0647 (\u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f <code>new<\/code>) <code>this<\/code> \u0622\u06cc\u0627 \u0634\u06cc\u0621 \u062a\u0627\u0632\u0647 \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u0627\u0633\u062a<\/li>\n<li>\u0628\u0631\u0627\u06cc \u0631\u0648\u0634 \u0647\u0627 \u060c <code>this<\/code> \u0634\u06cc\u0621 \u0627\u0633\u062a \u06a9\u0647 \u0635\u0627\u062d\u0628 \u0631\u0648\u0634 \u0627\u0633\u062a<\/li>\n<li>\u0628\u0631\u0627\u06cc \u062a\u0648\u0627\u0628\u0639 \u0641\u0644\u0634 \u060c <code>this<\/code> \u0627\u0632 \u062f\u0627\u0645\u0646\u0647 \u0645\u062d\u0635\u0648\u0631 \u0628\u0647 \u0627\u0631\u062b \u0631\u0633\u06cc\u062f\u0647 \u0627\u0633\u062a<\/li>\n<li>\u0628\u0631\u0627\u06cc \u062a\u0645\u0627\u0633 \u0647\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0633\u0627\u062f\u0647 \u060c <code>this<\/code> \u06cc\u0627 \u0634\u06cc\u0621 \u062c\u0647\u0627\u0646\u06cc \u0627\u0633\u062a \u06cc\u0627 \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 (\u062f\u0631 \u062d\u0627\u0644\u062a \u0633\u062e\u062a)<\/li>\n<\/ol>\n<p>\u062f\u0631\u06a9 \u0627\u06cc\u0646 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0628\u0647 \u0634\u0645\u0627 \u06a9\u0645\u06a9 \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u067e\u06cc\u0634 \u0628\u06cc\u0646\u06cc \u06a9\u0646\u06cc\u062f <code>this<\/code> \u062f\u0631 \u0647\u0631 \u0634\u0631\u0627\u06cc\u0637\u06cc \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%DB%8C%DA%A9_%D9%85%D8%AB%D8%A7%D9%84_%D8%AF%D9%86%DB%8C%D8%A7%DB%8C_%D9%88%D8%A7%D9%82%D8%B9%DB%8C_%E2%80%A6_%D9%81%DA%A9%D8%B1_%D9%85%DB%8C_%DA%A9%D9%86%D9%85\"><\/span>\n<p>  \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u062f\u0646\u06cc\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc &#8230; \u0641\u06a9\u0631 \u0645\u06cc \u06a9\u0646\u0645<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0627\u0644\u06af\u0648\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u062f\u0631 \u06a9\u062f \u0648\u0627\u0642\u0639\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u06a9\u0646\u06cc\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">EventEmitter<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nf\">constructor<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">events<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{};<\/span>\n    <span class=\"c1\">\/\/ Using an arrow function to preserve 'this'<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">emit<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"nx\">event<\/span><span class=\"p\">,<\/span> <span class=\"p\">...<\/span><span class=\"nx\">args<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"kd\">const<\/span> <span class=\"nx\">handlers<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">events<\/span><span class=\"p\">[<\/span><span class=\"nx\">event<\/span><span class=\"p\">]<\/span> <span class=\"o\">||<\/span> <span class=\"p\">[];<\/span>\n      <span class=\"nx\">handlers<\/span><span class=\"p\">.<\/span><span class=\"nf\">forEach<\/span><span class=\"p\">((<\/span><span class=\"nx\">handler<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">handler<\/span><span class=\"p\">.<\/span><span class=\"nf\">apply<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">,<\/span> <span class=\"nx\">args<\/span><span class=\"p\">));<\/span>\n    <span class=\"p\">};<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"nf\">on<\/span><span class=\"p\">(<\/span><span class=\"nx\">event<\/span><span class=\"p\">,<\/span> <span class=\"nx\">handler<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">events<\/span><span class=\"p\">[<\/span><span class=\"nx\">event<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">events<\/span><span class=\"p\">[<\/span><span class=\"nx\">event<\/span><span class=\"p\">]<\/span> <span class=\"o\">||<\/span> <span class=\"p\">[];<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">events<\/span><span class=\"p\">[<\/span><span class=\"nx\">event<\/span><span class=\"p\">].<\/span><span class=\"nf\">push<\/span><span class=\"p\">(<\/span><span class=\"nx\">handler<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"kd\">const<\/span> <span class=\"nx\">emitter<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">EventEmitter<\/span><span class=\"p\">();<\/span>\n<span class=\"nx\">emitter<\/span><span class=\"p\">.<\/span><span class=\"nf\">on<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">test<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nf\">function <\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nf\">log<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span> <span class=\"o\">===<\/span> <span class=\"nx\">emitter<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ true<\/span>\n<span class=\"p\">});<\/span>\n<span class=\"nx\">emitter<\/span><span class=\"p\">.<\/span><span class=\"nf\">emit<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">test<\/span><span class=\"dl\">\"<\/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<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644 \u060c \u0645\u0627 \u0627\u0632 \u0647\u0631 \u062f\u0648 \u062a\u0648\u0627\u0628\u0639 \u0641\u0644\u0634 \u0648 \u06a9\u0627\u0631\u06a9\u0631\u062f\u0647\u0627\u06cc \u0645\u0646\u0638\u0645 \u0628\u0647 \u0635\u0648\u0631\u062a \u0627\u0633\u062a\u0631\u0627\u062a\u0698\u06cc\u06a9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u0639\u0645\u0644\u06a9\u0631\u062f \u0641\u0644\u0634 \u0628\u0631\u0627\u06cc <code>emit<\/code> \u062a\u0636\u0645\u06cc\u0646 \u06a9\u0631\u062f\u0646 <code>this<\/code> \u0647\u0645\u06cc\u0634\u0647 \u0628\u0647 \u0646\u0645\u0648\u0646\u0647 EventEmitter \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u06a9\u0646\u062a\u0631\u0644 \u06a9\u0646\u0646\u062f\u0647 \u0622\u0646 \u0631\u0627 \u0628\u062f\u0633\u062a \u0645\u06cc \u0622\u0648\u0631\u062f <code>this<\/code> \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0627\u0645\u06cc\u062a\u0631 <code>apply<\/code>\u0628\u0634\u0631<\/p>\n<p>\u0628\u0647 \u06cc\u0627\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u060c <code>this<\/code> \u062c\u0627\u062f\u0648\u06cc\u06cc \u0646\u06cc\u0633\u062a \u0628\u0644\u06a9\u0647 \u0641\u0642\u0637 \u067e\u0627\u0631\u0627\u0645\u062a\u0631 \u0627\u0633\u062a \u06a9\u0647 JavaScript \u0628\u0647 \u0631\u0648\u0634\u06cc \u062e\u0627\u0635 \u0628\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f\u0647\u0627\u06cc \u062e\u0648\u062f \u0645\u0646\u062a\u0642\u0644 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0627\u0631\u0632\u0634 this \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u06cc\u06a9 \u0639\u0645\u0644\u06a9\u0631\u062f \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u060c \u0646\u0647 \u062f\u0631 \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0634\u062e\u0635\u0627\u062a ECMAScript \u0622\u0646 \u0631\u0627 &#8220;\u0627\u062a\u0635\u0627\u0644 \u0632\u0645\u0627\u0646&#8221; \u0645\u06cc \u0646\u0627\u0645\u062f. \u0628\u0647 \u0622\u0646 \u0641\u06a9\u0631 \u06a9\u0646\u06cc\u062f \u0645\u0627\u0646\u0646\u062f \u06cc\u06a9 \u0628\u0627\u0632\u06cc \u0633\u06cc\u0628 \u0632\u0645\u06cc\u0646\u06cc \u062f\u0627\u063a \u0647\u0631\u06a9\u0633\u06cc \u06a9\u0647 \u0633\u06cc\u0628 \u0632\u0645\u06cc\u0646\u06cc \u0631\u0627 \u0646\u06af\u0647 \u0645\u06cc \u062f\u0627\u0631\u062f (\u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f) \u0686\u0647 \u0686\u06cc\u0632\u06cc &hellip;<\/p>\n","protected":false},"author":2,"featured_media":95502,"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%2Fy7yp14ehplz40wir1qwk.jpg","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-95501","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\/95501","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=95501"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/95501\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/95502"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=95501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=95501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=95501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}