{"id":79557,"date":"2024-10-09T05:09:50","date_gmt":"2024-10-09T01:39:50","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/"},"modified":"2024-10-09T05:09:50","modified_gmt":"2024-10-09T01:39:50","slug":"angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/","title":{"rendered":"Angular LAB: \u0628\u06cc\u0627\u06cc\u06cc\u062f \u06cc\u06a9 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u0645"},"content":{"rendered":"<p><\/p>\n<div data-article-id=\"2030799\" id=\"article-body\">\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u0645 \u0646\u062d\u0648\u0647 \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0632\u0627\u0648\u06cc\u0647\u200c\u0627\u06cc \u0628\u0633\u06cc\u0627\u0631 \u0633\u0627\u062f\u0647 \u0631\u0627 \u0646\u0634\u0627\u0646 \u062f\u0647\u0645 \u06a9\u0647 \u0648\u0636\u0639\u06cc\u062a \u062f\u06cc\u062f \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u06cc\u0627 \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u062f\u0631 \u0648\u06cc\u0648\u067e\u0648\u0631\u062a \u0648\u0627\u0631\u062f \u0648 \u062e\u0627\u0631\u062c \u0645\u06cc\u200c\u0634\u0648\u062f \u0631\u0627 \u067e\u06cc\u06af\u06cc\u0631\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u0645\u06cc\u062f\u0648\u0627\u0631\u0645 \u0627\u06cc\u0646 \u06cc\u06a9 \u062a\u0645\u0631\u06cc\u0646 \u062e\u0648\u0628 \u0648 \u0634\u0627\u06cc\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f!<\/p>\n<p>\u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631\u060c \u0645\u0627 \u0627\u0632 <code>IntersectionObserver<\/code> JavaScript API \u06a9\u0647 \u062f\u0631 \u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627\u06cc \u0645\u062f\u0631\u0646 \u0645\u0648\u062c\u0648\u062f \u0627\u0633\u062a.<\/p>\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: #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\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/#%DA%86%DB%8C%D8%B2%DB%8C_%DA%A9%D9%87_%D9%85%DB%8C_%D8%AE%D9%88%D8%A7%D9%87%DB%8C%D9%85_%D8%A8%D9%87_%D8%A2%D9%86_%D8%A8%D8%B1%D8%B3%DB%8C%D9%85\" >\u0686\u06cc\u0632\u06cc \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u0628\u0647 \u0622\u0646 \u0628\u0631\u0633\u06cc\u0645<\/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\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/#%D8%A7%DB%8C%D8%AC%D8%A7%D8%AF_%D8%AF%D8%B3%D8%AA%D9%88%D8%B1%D8%A7%D9%84%D8%B9%D9%85%D9%84\" >\u0627\u06cc\u062c\u0627\u062f \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644<\/a><\/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\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/#IntersectionObserver\" >IntersectionObserver<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nabfollower.com\/blog\/angular-lab-%d8%a8%db%8c%d8%a7%db%8c%db%8c%d8%af-%db%8c%da%a9-%d8%af%d8%b3%d8%aa%d9%88%d8%b1%d8%a7%d9%84%d8%b9%d9%85%d9%84-%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86%db%8c%d9%85\/#%DA%A9%D8%AF_%D9%86%D9%87%D8%A7%DB%8C%DB%8C\" >\u06a9\u062f \u0646\u0647\u0627\u06cc\u06cc<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%DA%86%DB%8C%D8%B2%DB%8C_%DA%A9%D9%87_%D9%85%DB%8C_%D8%AE%D9%88%D8%A7%D9%87%DB%8C%D9%85_%D8%A8%D9%87_%D8%A2%D9%86_%D8%A8%D8%B1%D8%B3%DB%8C%D9%85\"><\/span>\n<p>  \u0686\u06cc\u0632\u06cc \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u0628\u0647 \u0622\u0646 \u0628\u0631\u0633\u06cc\u0645<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0645\u0627 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u0627\u0632 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0628\u0647 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight html\"><code><span class=\"nt\"><p>\n  <span class=\"na\">visibility<\/span>\n  <span class=\"na\">[visibilityMonitor]=<\/span><span class=\"s\">\"true\"<\/span>\n  <span class=\"na\">(visibilityChange)=<\/span><span class=\"s\">\"onVisibilityChange($event)\"<\/span>\n<span class=\"nt\">&gt;<\/span>\n  I'm being observed! Can you see me yet?\n<span class=\"nt\"\/><\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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<ul>\n<li>\n<code>visibility<\/code>  \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u0646\u062f\u0647 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0633\u0641\u0627\u0631\u0634\u06cc \u0645\u0627 \u0627\u0633\u062a<\/li>\n<li>\n<code>visibilityMonitor<\/code>  \u06cc\u06a9 \u0648\u0631\u0648\u062f\u06cc \u0627\u062e\u062a\u06cc\u0627\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0634\u062e\u0635 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0622\u06cc\u0627 \u0628\u0627\u06cc\u062f \u0628\u0647 \u0645\u0634\u0627\u0647\u062f\u0647 \u0639\u0646\u0635\u0631 \u0627\u062f\u0627\u0645\u0647 \u062f\u0627\u062f \u06cc\u0627 \u062e\u06cc\u0631 (\u0627\u06af\u0631 <code>false<\/code>\u060c \u0647\u0646\u06af\u0627\u0645 \u0648\u0631\u0648\u062f \u0628\u0647 \u0648\u06cc\u0648\u067e\u0648\u0631\u062a\u060c \u0646\u0638\u0627\u0631\u062a \u0631\u0627 \u0645\u062a\u0648\u0642\u0641 \u06a9\u0646\u06cc\u062f)<\/li>\n<li>\n<code>visibilityChange<\/code>  \u0628\u0647 \u0645\u0627 \u0627\u0637\u0644\u0627\u0639 \u062e\u0648\u0627\u0647\u062f \u062f\u0627\u062f<\/li>\n<\/ul>\n<p>\u062e\u0631\u0648\u062c\u06cc \u0628\u0647 \u0627\u06cc\u0646 \u0634\u06a9\u0644 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"kd\">type<\/span> <span class=\"nx\">VisibilityChange<\/span> <span class=\"o\">=<\/span>\n  <span class=\"o\">|<\/span> <span class=\"p\">{<\/span>\n      <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\n      <span class=\"nl\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HTMLElement<\/span><span class=\"p\">;<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"o\">|<\/span> <span class=\"p\">{<\/span>\n      <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">;<\/span>\n      <span class=\"nl\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HTMLElement<\/span> <span class=\"o\">|<\/span> <span class=\"kc\">undefined<\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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>\u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u062f\u0627\u0634\u062a\u0646 <code>target<\/code> \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0639\u0646\u0635\u0631 \u0627\u0632 DOM \u062d\u0630\u0641 \u0634\u062f\u0647 \u0627\u0633\u062a (\u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u062a\u0648\u0633\u0637 \u06cc\u06a9 <code>@if<\/code>). <\/p>\n<h2><span class=\"ez-toc-section\" id=\"%D8%A7%DB%8C%D8%AC%D8%A7%D8%AF_%D8%AF%D8%B3%D8%AA%D9%88%D8%B1%D8%A7%D9%84%D8%B9%D9%85%D9%84\"><\/span>\n<p>  \u0627\u06cc\u062c\u0627\u062f \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0645\u0627 \u0628\u0647 \u0633\u0627\u062f\u06af\u06cc \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0631\u0627 \u0646\u0638\u0627\u0631\u062a \u0645\u06cc \u06a9\u0646\u062f\u060c \u0633\u0627\u062e\u062a\u0627\u0631 DOM \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u0645\u06cc \u062f\u0647\u062f: \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f <strong>\u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0648\u06cc\u0698\u06af\u06cc<\/strong>.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"p\">@<\/span><span class=\"nd\">Directive<\/span><span class=\"p\">({<\/span>\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">[visibility]<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\n  <span class=\"na\">standalone<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span>\n<span class=\"p\">})<\/span>\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">VisibilityDirective<\/span> <span class=\"k\">implements<\/span> <span class=\"nx\">OnInit<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnChanges<\/span><span class=\"p\">,<\/span> <span class=\"nx\">AfterViewInit<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnDestroy<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">element<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">inject<\/span><span class=\"p\">(<\/span><span class=\"nx\">ElementRef<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"cm\">\/**\n   * Emits after the view is initialized.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">afterViewInit$<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">Subject<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">void<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">();<\/span>\n\n  <span class=\"cm\">\/**\n   * The IntersectionObserver for this element.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">observer<\/span><span class=\"p\">:<\/span> <span class=\"nx\">IntersectionObserver<\/span> <span class=\"o\">|<\/span> <span class=\"kc\">undefined<\/span><span class=\"p\">;<\/span>\n\n  <span class=\"cm\">\/**\n   * Last known visibility for this element.\n   * Initially, we don't know.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"nx\">boolean<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">undefined<\/span><span class=\"p\">;<\/span>\n\n  <span class=\"cm\">\/**\n   * If false, once the element becomes visible there will be one emission and then nothing.\n   * If true, the directive continuously listens to the element and emits whenever it becomes visible or not visible.\n   *\/<\/span>\n  <span class=\"nx\">visibilityMonitor<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">input<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"cm\">\/**\n   * Notifies the listener when the element has become visible.\n   * If \"visibilityMonitor\" is true, it continuously notifies the listener when the element goes in\/out of view.\n   *\/<\/span>\n  <span class=\"nx\">visibilityChange<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">output<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">VisibilityChange<\/span><span class=\"o\">&gt;<\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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 \u06a9\u062f \u0628\u0627\u0644\u0627 \u0645\u06cc \u0628\u06cc\u0646\u06cc\u062f:<\/p>\n<ul>\n<li>\u0631\u0627 <code>input<\/code> \u0648 <code>output<\/code> \u0642\u0628\u0644\u0627 \u062f\u0631 \u0645\u0648\u0631\u062f\u0634 \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u06cc\u0645<\/li>\n<li>\u0645\u0644\u06a9\u06cc \u0628\u0647 \u0646\u0627\u0645 <code>afterViewInit$<\/code> (\u06cc\u06a9 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647) \u06a9\u0647 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u0647\u0645\u062a\u0627\u06cc \u0648\u0627\u06a9\u0646\u0634\u06cc \u0639\u0645\u0644 \u0645\u06cc \u06a9\u0646\u062f <code>ngAfterViewInit<\/code> \u0642\u0644\u0627\u0628 \u0686\u0631\u062e\u0647 \u0632\u0646\u062f\u06af\u06cc<\/li>\n<li>\u0645\u0644\u06a9\u06cc \u0628\u0647 \u0646\u0627\u0645 <code>observer<\/code> \u06a9\u0647 \u0630\u062e\u06cc\u0631\u0647 \u062e\u0648\u0627\u0647\u062f \u06a9\u0631\u062f <code>IntersectionObserver<\/code> \u0645\u0633\u0626\u0648\u0644 \u0646\u0638\u0627\u0631\u062a \u0628\u0631 \u0639\u0646\u0635\u0631 \u0645\u0627 \u0627\u0633\u062a<\/li>\n<li>\u0645\u0644\u06a9\u06cc \u0628\u0647 \u0646\u0627\u0645 <code>isVisibile<\/code> \u06a9\u0647 \u0622\u062e\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a \u062f\u06cc\u062f \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u0627\u0632 \u0627\u0646\u062a\u0634\u0627\u0631 \u0645\u062c\u062f\u062f \u0647\u0645\u0627\u0646 \u062d\u0627\u0644\u062a \u062f\u0648 \u0628\u0627\u0631 \u0645\u062a\u0648\u0627\u0644\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0634\u0648\u062f<\/li>\n<\/ul>\n<p>\u0648 \u0628\u0647 \u0637\u0648\u0631 \u0637\u0628\u06cc\u0639\u06cc\u060c \u0645\u0627 \u062a\u0632\u0631\u06cc\u0642 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>ElementRef<\/code> \u0628\u0647 \u0645\u0646\u0638\u0648\u0631 \u06af\u0631\u0641\u062a\u0646 \u0639\u0646\u0635\u0631 DOM \u06a9\u0647 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u062e\u0648\u062f \u0631\u0627 \u0628\u0631 \u0631\u0648\u06cc \u0622\u0646 \u0627\u0639\u0645\u0627\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u0645.<\/p>\n<p>\u0642\u0628\u0644 \u0627\u0632 \u0646\u0648\u0634\u062a\u0646 \u0631\u0648\u0634 \u0627\u0635\u0644\u06cc\u060c \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u0686\u0631\u062e\u0647 \u062d\u06cc\u0627\u062a \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u062a\u0648\u062c\u0647 \u06a9\u0646\u06cc\u0645.<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"nf\">ngOnInit<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">reconnectObserver<\/span><span class=\"p\">();<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"nf\">ngOnChanges<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">reconnectObserver<\/span><span class=\"p\">();<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"nf\">ngAfterViewInit<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">afterViewInit$<\/span><span class=\"p\">.<\/span><span class=\"nf\">next<\/span><span class=\"p\">();<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"nf\">ngOnDestroy<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n  <span class=\"c1\">\/\/ Disconnect and if visibilityMonitor is true, notify the listener<\/span>\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnectObserver<\/span><span class=\"p\">();<\/span>\n  <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityChange<\/span><span class=\"p\">.<\/span><span class=\"nf\">emit<\/span><span class=\"p\">({<\/span>\n      <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span>\n      <span class=\"na\">target<\/span><span class=\"p\">:<\/span> <span class=\"kc\">undefined<\/span>\n    <span class=\"p\">});<\/span>\n  <span class=\"p\">}<\/span>\n<span class=\"p\">}<\/span>\n\n<span class=\"k\">private<\/span> <span class=\"nf\">reconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{}<\/span>\n<span class=\"k\">private<\/span> <span class=\"nf\">disconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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\u0627\u0644\u0627 \u0627\u06cc\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0627\u062a\u0641\u0627\u0642 \u0645\u06cc \u0627\u0641\u062a\u062f:<\/p>\n<ul>\n<li>\u062f\u0627\u062e\u0644 \u0647\u0631 \u062f\u0648 <code>ngOnInit<\/code> \u0648 <code>ngOnChanges<\/code> \u0646\u0627\u0638\u0631 \u0631\u0627 \u062f\u0648\u0628\u0627\u0631\u0647 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u0627\u06cc\u0646 \u0628\u0647 \u0645\u0646\u0638\u0648\u0631 \u0648\u0627\u06a9\u0646\u0634\u06cc \u06a9\u0631\u062f\u0646 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0627\u0633\u062a: \u0627\u06af\u0631 \u0648\u0631\u0648\u062f\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f\u060c \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0645\u062a\u0641\u0627\u0648\u062a \u0631\u0641\u062a\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f. \u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u06a9\u0647 \u062d\u062a\u06cc \u0627\u06af\u0631 <code>ngOnChanges<\/code> \u0642\u0628\u0644 \u0646\u06cc\u0632 \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f <code>ngOnInit<\/code>\u060c \u0645\u0627 \u0647\u0646\u0648\u0632 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u0645 <code>ngOnInit<\/code> \u0686\u0648\u0646 <code>ngOnChanges<\/code> <strong>\u0627\u06af\u0631 \u0648\u0631\u0648\u062f\u06cc \u062f\u0631 \u0642\u0627\u0644\u0628 \u0648\u062c\u0648\u062f \u0646\u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u0627\u062c\u0631\u0627 \u0646\u0645\u06cc \u0634\u0648\u062f!<\/strong>\n<\/li>\n<li>\u0648\u0642\u062a\u06cc \u0646\u0645\u0627 \u0645\u0642\u062f\u0627\u0631 \u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0645\u06cc \u0634\u0648\u062f\u060c \u0622\u0646 \u0631\u0627 \u0641\u0639\u0627\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>Subject<\/code>\u060c \u062a\u0627 \u0686\u0646\u062f \u062b\u0627\u0646\u06cc\u0647 \u062f\u06cc\u06af\u0631 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0648\u0636\u0648\u0639 \u062e\u0648\u0627\u0647\u06cc\u0645 \u0631\u0633\u06cc\u062f<\/li>\n<li>\u0645\u0627 \u0627\u062a\u0635\u0627\u0644 \u062e\u0648\u062f \u0631\u0627 \u0642\u0637\u0639 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>observer<\/code> \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0646\u0634\u062a \u062d\u0627\u0641\u0638\u0647 \u0627\u0632 \u0628\u06cc\u0646 \u0645\u06cc \u0631\u0648\u062f. \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a\u060c \u0627\u06af\u0631 \u062a\u0648\u0633\u0639\u0647\u200c\u062f\u0647\u0646\u062f\u0647 \u0622\u0646 \u0631\u0627 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0631\u062f\u060c \u0628\u0647 \u0627\u0637\u0644\u0627\u0639 \u0645\u06cc\u200c\u0631\u0633\u0627\u0646\u06cc\u0645 \u06a9\u0647 \u0628\u0627 \u0627\u0631\u0633\u0627\u0644 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0627\u0632 DOM \u062d\u0630\u0641 \u0634\u062f\u0647 \u0627\u0633\u062a. <code>undefined<\/code> \u0639\u0646\u0635\u0631<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"IntersectionObserver\"><\/span>\n<p>  IntersectionObserver<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u06cc\u0646 \u0642\u0644\u0628 \u0628\u062e\u0634\u0646\u0627\u0645\u0647 \u0645\u0627 \u0627\u0633\u062a. \u0645\u0627 <code>reconnectObserver<\/code> \u0631\u0648\u0634 \u0634\u0631\u0648\u0639 \u0628\u0647 \u0645\u0634\u0627\u0647\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f! \u0686\u06cc\u0632\u06cc \u0634\u0628\u06cc\u0647 \u0627\u06cc\u0646 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"k\">private<\/span> <span class=\"nf\">reconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"c1\">\/\/ Disconnect an existing observer<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnectObserver<\/span><span class=\"p\">();<\/span>\n    <span class=\"c1\">\/\/ Sets up a new observer<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">IntersectionObserver<\/span><span class=\"p\">((<\/span><span class=\"nx\">entries<\/span><span class=\"p\">,<\/span> <span class=\"nx\">observer<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">entries<\/span><span class=\"p\">.<\/span><span class=\"nf\">forEach<\/span><span class=\"p\">(<\/span><span class=\"nx\">entry<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"na\">isIntersecting<\/span><span class=\"p\">:<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">,<\/span> <span class=\"nx\">target<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">entry<\/span><span class=\"p\">;<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"nx\">hasChangedVisibility<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span> <span class=\"o\">!==<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">isVisible<\/span><span class=\"p\">;<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"nx\">shouldEmit<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span> <span class=\"o\">||<\/span> <span class=\"p\">(<\/span><span class=\"o\">!<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">);<\/span>\n        <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"nx\">hasChangedVisibility<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nx\">shouldEmit<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityChange<\/span><span class=\"p\">.<\/span><span class=\"nf\">emit<\/span><span class=\"p\">({<\/span>\n            <span class=\"nx\">isVisible<\/span><span class=\"p\">,<\/span>\n            <span class=\"na\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">target<\/span> <span class=\"k\">as<\/span> <span class=\"nx\">HTMLElement<\/span>\n          <span class=\"p\">});<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">;<\/span>\n        <span class=\"p\">}<\/span>\n        <span class=\"c1\">\/\/ If visilibilyMonitor is false, once the element is visible we stop.<\/span>\n        <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">!<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n          <span class=\"nx\">observer<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnect<\/span><span class=\"p\">();<\/span>\n        <span class=\"p\">}<\/span>\n      <span class=\"p\">});<\/span>\n    <span class=\"p\">});<\/span>\n    <span class=\"c1\">\/\/ Start observing once the view is initialized<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">afterViewInit$<\/span><span class=\"p\">.<\/span><span class=\"nf\">subscribe<\/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\">observer<\/span><span class=\"p\">?.<\/span><span class=\"nf\">observe<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">element<\/span><span class=\"p\">.<\/span><span class=\"nx\">nativeElement<\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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>\u0628\u0647 \u0645\u0646 \u0627\u0639\u062a\u0645\u0627\u062f \u06a9\u0646\u06cc\u062f\u060c \u0622\u0646\u0642\u062f\u0631\u0647\u0627 \u0647\u0645 \u06a9\u0647 \u0628\u0647 \u0646\u0638\u0631 \u0645\u06cc \u0631\u0633\u062f \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0646\u06cc\u0633\u062a! \u0645\u06a9\u0627\u0646\u06cc\u0632\u0645 \u0627\u06cc\u0646 \u0627\u0633\u062a:<\/p>\n<ul>\n<li>\u0627\u0628\u062a\u062f\u0627 \u0645\u0634\u0627\u0647\u062f\u0647\u200c\u06af\u0631 \u0631\u0627 \u06a9\u0647 \u0642\u0628\u0644\u0627\u064b \u062f\u0631 \u062d\u0627\u0644 \u0627\u062c\u0631\u0627 \u0628\u0648\u062f\u060c \u0642\u0637\u0639 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645<\/li>\n<li>\u0645\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>IntersectionObserver<\/code> \u0648 \u0631\u0641\u062a\u0627\u0631 \u0622\u0646 \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f. \u0631\u0627 <code>entries<\/code> \u062d\u0627\u0648\u06cc \u0639\u0646\u0627\u0635\u0631 \u0646\u0638\u0627\u0631\u062a \u0634\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u062d\u0627\u0648\u06cc \u0639\u0646\u0635\u0631 \u0645\u0627 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f. \u0645\u0644\u06a9 <code>isIntersecting<\/code> \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u062f\u06cc\u062f \u0639\u0646\u0635\u0631 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631: \u0645\u0627 \u0622\u0646 \u0631\u0627 \u0628\u0627 \u062d\u0627\u0644\u062a \u0642\u0628\u0644\u06cc (\u0648\u06cc\u0698\u06af\u06cc \u0645\u0627) \u0645\u0642\u0627\u06cc\u0633\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u0648 \u0627\u06af\u0631 \u0628\u0647 \u062f\u0644\u06cc\u0644 \u0622\u0646 \u0627\u0633\u062a\u060c \u0645\u0627 \u0645\u0646\u062a\u0634\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u0645. \u0633\u067e\u0633 \u062d\u0627\u0644\u062a \u062c\u062f\u06cc\u062f \u0631\u0627 \u0628\u0631\u0627\u06cc \u0628\u0639\u062f \u062f\u0631 \u0645\u0644\u06a9 \u062e\u0648\u062f \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645.<\/li>\n<li>\u0627\u06af\u0631 <code>visibilityMonitor<\/code> \u0627\u0633\u062a <code>false<\/code>\u060c \u0628\u0647 \u0645\u062d\u0636 \u0627\u06cc\u0646\u06a9\u0647 \u0639\u0646\u0635\u0631 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0634\u062f\u060c \u0646\u0627\u0638\u0631 \u0631\u0627 \u0642\u0637\u0639 \u0645\u06cc \u06a9\u0646\u06cc\u0645: \u06a9\u0627\u0631 \u0622\u0646 \u062a\u0645\u0627\u0645 \u0634\u062f\u0647 \u0627\u0633\u062a!<\/li>\n<li>\u0633\u067e\u0633 \u0645\u0627 \u0628\u0627\u06cc\u062f <strong>\u0634\u0631\u0648\u0639 \u06a9\u0646\u06cc\u062f<\/strong> \u0646\u0627\u0638\u0631 \u0628\u0627 \u0639\u0628\u0648\u0631 \u0627\u0632 \u0639\u0646\u0635\u0631 \u0645\u0627\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0645\u0646\u062a\u0638\u0631\u06cc\u0645 \u062a\u0627 \u0646\u0645\u0627\u06cc \u0645\u0627 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0634\u0648\u062f.<\/li>\n<\/ul>\n<p>\u062f\u0631 \u0646\u0647\u0627\u06cc\u062a\u060c \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0631\u0648\u0634\u06cc \u0631\u0627 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0646\u0627\u0638\u0631 \u0631\u0627 \u0642\u0637\u0639 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0622\u0633\u0627\u0646 \u067e\u06cc\u0632\u06cc:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code> <span class=\"k\">private<\/span> <span class=\"nf\">disconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnect<\/span><span class=\"p\">();<\/span>\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">undefined<\/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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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=\"%DA%A9%D8%AF_%D9%86%D9%87%D8%A7%DB%8C%DB%8C\"><\/span>\n<p>  \u06a9\u062f \u0646\u0647\u0627\u06cc\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u06cc\u0646 \u0628\u062e\u0634\u0646\u0627\u0645\u0647 \u06a9\u0627\u0645\u0644 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0641\u0642\u0637 \u06cc\u06a9 \u062a\u0645\u0631\u06cc\u0646 \u0628\u0648\u062f\u060c \u067e\u0633 \u0622\u0632\u0627\u062f\u0627\u0646\u0647 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0647\u0631 \u0686\u06cc\u0632\u06cc \u06a9\u0647 \u062f\u0648\u0633\u062a \u062f\u0627\u0631\u06cc\u062f \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f!<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight typescript\"><code><span class=\"kd\">type<\/span> <span class=\"nx\">VisibilityChange<\/span> <span class=\"o\">=<\/span>\n  <span class=\"o\">|<\/span> <span class=\"p\">{<\/span>\n      <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\n      <span class=\"nl\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HTMLElement<\/span><span class=\"p\">;<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"o\">|<\/span> <span class=\"p\">{<\/span>\n      <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">;<\/span>\n      <span class=\"nl\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HTMLElement<\/span> <span class=\"o\">|<\/span> <span class=\"kc\">undefined<\/span><span class=\"p\">;<\/span>\n    <span class=\"p\">};<\/span>\n\n<span class=\"p\">@<\/span><span class=\"nd\">Directive<\/span><span class=\"p\">({<\/span>\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">[visibility]<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\n  <span class=\"na\">standalone<\/span><span class=\"p\">:<\/span> <span class=\"kc\">true<\/span>\n<span class=\"p\">})<\/span>\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">VisibilityDirective<\/span>\n  <span class=\"k\">implements<\/span> <span class=\"nx\">OnChanges<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnInit<\/span><span class=\"p\">,<\/span> <span class=\"nx\">AfterViewInit<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnDestroy<\/span> <span class=\"p\">{<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">element<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">inject<\/span><span class=\"p\">(<\/span><span class=\"nx\">ElementRef<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"cm\">\/**\n   * Emits after the view is initialized.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">afterViewInit$<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">Subject<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">void<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">();<\/span>\n\n  <span class=\"cm\">\/**\n   * The IntersectionObserver for this element.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">observer<\/span><span class=\"p\">:<\/span> <span class=\"nx\">IntersectionObserver<\/span> <span class=\"o\">|<\/span> <span class=\"kc\">undefined<\/span><span class=\"p\">;<\/span>\n\n  <span class=\"cm\">\/**\n   * Last known visibility for this element.\n   * Initially, we don't know.\n   *\/<\/span>\n  <span class=\"k\">private<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"nx\">boolean<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">undefined<\/span><span class=\"p\">;<\/span>\n\n  <span class=\"cm\">\/**\n   * If false, once the element becomes visible there will be one emission and then nothing.\n   * If true, the directive continuously listens to the element and emits whenever it becomes visible or not visible.\n   *\/<\/span>\n  <span class=\"nx\">visibilityMonitor<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">input<\/span><span class=\"p\">(<\/span><span class=\"kc\">false<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"cm\">\/**\n   * Notifies the listener when the element has become visible.\n   * If \"visibilityMonitor\" is true, it continuously notifies the listener when the element goes in\/out of view.\n   *\/<\/span>\n  <span class=\"nx\">visibilityChange<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">output<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">VisibilityChange<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">();<\/span>\n\n  <span class=\"nf\">ngOnInit<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">reconnectObserver<\/span><span class=\"p\">();<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"nf\">ngOnChanges<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">reconnectObserver<\/span><span class=\"p\">();<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"nf\">ngAfterViewInit<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">afterViewInit$<\/span><span class=\"p\">.<\/span><span class=\"nf\">next<\/span><span class=\"p\">(<\/span><span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"nf\">ngOnDestroy<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"c1\">\/\/ Disconnect and if visibilityMonitor is true, notify the listener<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnectObserver<\/span><span class=\"p\">();<\/span>\n    <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityChange<\/span><span class=\"p\">.<\/span><span class=\"nf\">emit<\/span><span class=\"p\">({<\/span>\n        <span class=\"na\">isVisible<\/span><span class=\"p\">:<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span>\n        <span class=\"na\">target<\/span><span class=\"p\">:<\/span> <span class=\"kc\">undefined<\/span>\n      <span class=\"p\">});<\/span>\n    <span class=\"p\">}<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"k\">private<\/span> <span class=\"nf\">reconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"c1\">\/\/ Disconnect an existing observer<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnectObserver<\/span><span class=\"p\">();<\/span>\n    <span class=\"c1\">\/\/ Sets up a new observer<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">IntersectionObserver<\/span><span class=\"p\">((<\/span><span class=\"nx\">entries<\/span><span class=\"p\">,<\/span> <span class=\"nx\">observer<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n      <span class=\"nx\">entries<\/span><span class=\"p\">.<\/span><span class=\"nf\">forEach<\/span><span class=\"p\">(<\/span><span class=\"nx\">entry<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"p\">{<\/span> <span class=\"na\">isIntersecting<\/span><span class=\"p\">:<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">,<\/span> <span class=\"nx\">target<\/span> <span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">entry<\/span><span class=\"p\">;<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"nx\">hasChangedVisibility<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span> <span class=\"o\">!==<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">isVisible<\/span><span class=\"p\">;<\/span>\n        <span class=\"kd\">const<\/span> <span class=\"nx\">shouldEmit<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span> <span class=\"o\">||<\/span> <span class=\"p\">(<\/span><span class=\"o\">!<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">);<\/span>\n        <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"nx\">hasChangedVisibility<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nx\">shouldEmit<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityChange<\/span><span class=\"p\">.<\/span><span class=\"nf\">emit<\/span><span class=\"p\">({<\/span>\n            <span class=\"nx\">isVisible<\/span><span class=\"p\">,<\/span>\n            <span class=\"na\">target<\/span><span class=\"p\">:<\/span> <span class=\"nx\">target<\/span> <span class=\"k\">as<\/span> <span class=\"nx\">HTMLElement<\/span>\n          <span class=\"p\">});<\/span>\n          <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">isVisible<\/span><span class=\"p\">;<\/span>\n        <span class=\"p\">}<\/span>\n        <span class=\"c1\">\/\/ If visilibilyMonitor is false, once the element is visible we stop.<\/span>\n        <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"nx\">isVisible<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"o\">!<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">visibilityMonitor<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n          <span class=\"nx\">observer<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnect<\/span><span class=\"p\">();<\/span>\n        <span class=\"p\">}<\/span>\n      <span class=\"p\">});<\/span>\n    <span class=\"p\">});<\/span>\n    <span class=\"c1\">\/\/ Start observing once the view is initialized<\/span>\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">afterViewInit$<\/span><span class=\"p\">.<\/span><span class=\"nf\">subscribe<\/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\">observer<\/span><span class=\"p\">?.<\/span><span class=\"nf\">observe<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">element<\/span><span class=\"p\">.<\/span><span class=\"nx\">nativeElement<\/span><span class=\"p\">);<\/span>\n    <span class=\"p\">});<\/span>\n  <span class=\"p\">}<\/span>\n\n  <span class=\"k\">private<\/span> <span class=\"nf\">disconnectObserver<\/span><span class=\"p\">():<\/span> <span class=\"k\">void<\/span> <span class=\"p\">{<\/span>\n    <span class=\"k\">if <\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span><span class=\"p\">.<\/span><span class=\"nf\">disconnect<\/span><span class=\"p\">();<\/span>\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">observer<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">undefined<\/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 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>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\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><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u0645 \u0646\u062d\u0648\u0647 \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0632\u0627\u0648\u06cc\u0647\u200c\u0627\u06cc \u0628\u0633\u06cc\u0627\u0631 \u0633\u0627\u062f\u0647 \u0631\u0627 \u0646\u0634\u0627\u0646 \u062f\u0647\u0645 \u06a9\u0647 \u0648\u0636\u0639\u06cc\u062a \u062f\u06cc\u062f \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u06cc\u0627 \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u062f\u0631 \u0648\u06cc\u0648\u067e\u0648\u0631\u062a \u0648\u0627\u0631\u062f \u0648 \u062e\u0627\u0631\u062c \u0645\u06cc\u200c\u0634\u0648\u062f \u0631\u0627 \u067e\u06cc\u06af\u06cc\u0631\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u0645\u06cc\u062f\u0648\u0627\u0631\u0645 \u0627\u06cc\u0646 \u06cc\u06a9 \u062a\u0645\u0631\u06cc\u0646 \u062e\u0648\u0628 \u0648 \u0634\u0627\u06cc\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f! \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631\u060c \u0645\u0627 \u0627\u0632 IntersectionObserver JavaScript API \u06a9\u0647 \u062f\u0631 \u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627\u06cc &hellip;<\/p>\n","protected":false},"author":2,"featured_media":79558,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/media.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%2Fvfo5fbeg6kbgtwrtijr3.png","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-79557","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\/79557","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=79557"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/79557\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/79558"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=79557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=79557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=79557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}