{"id":15731,"date":"2024-01-16T05:47:08","date_gmt":"2024-01-16T02:17:08","guid":{"rendered":"https:\/\/rasanegar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/"},"modified":"2024-01-16T05:47:08","modified_gmt":"2024-01-16T02:17:08","slug":"%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7","status":"publish","type":"post","link":"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/","title":{"rendered":"\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a: \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0645\u062e\u0641\u06cc \u0627\u0633\u062a \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0646\u06af\u0627\u0647\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a \u0628\u0647 \u0631\u0648\u0634 \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0645\u062e\u0641\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0631\u0627\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f:  console.log($(myElement).is(&quot;:hidden&quot;))  console.log($(myElement).is(&quot;:visible&quot;))  console.log($(myElement).css(&#8230;"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0633\u0631\u0641\u0635\u0644\u0647\u0627\u06cc \u0645\u0637\u0644\u0628<\/p>\n<\/div><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:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d9%85%d8%b9%d8%b1%d9%81%db%8c\" >\u0645\u0639\u0631\u0641\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:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%b1%d8%a7%d9%87_%d8%a7%d9%86%d8%af%d8%a7%d8%b2%db%8c_%d9%85%d8%ad%db%8c%d8%b7\" >\u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u0645\u062d\u06cc\u0637<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa%e2%80%9d\" >\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 .\u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a&#8221;)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_%d8%a7%d8%b3%d8%aa_%e2%80%9c_%d9%82%d8%a7%d8%a8%d9%84_%d9%85%d8%b4%d8%a7%d9%87%d8%af%d9%87%e2%80%9d\" >\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 \u0627\u0633\u062a (&#8220;:\u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647&#8221;)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%85%d8%b4%d8%a7%d9%87%d8%af%d9%87%e2%80%9d\" >\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 .css (&#8220;\u0645\u0634\u0627\u0647\u062f\u0647&#8221;)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%86%d9%85%d8%a7%db%8c%d8%b4%e2%80%9d\" >\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 .css (&#8220;\u0646\u0645\u0627\u06cc\u0634&#8221;)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%85%d8%b9%d8%b1%d9%88%d9%81_%d8%a8%d9%88%d8%af%d9%86%e2%80%9d\" >\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 .css (&#8220;\u0645\u0639\u0631\u0648\u0641 \u0628\u0648\u062f\u0646&#8221;)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d8%a8%d8%b1%d8%b1%d8%b3%db%8c-%da%a9%d9%86%db%8c%d8%af-%da%a9%d9%87-%d8%a2%db%8c%d8%a7-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7\/#%d9%86%d8%aa%db%8c%d8%ac%d9%87\" >\u0646\u062a\u06cc\u062c\u0647<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span><p> <br \/>\n<\/p>\n<div class=\"content\"><noscript><\/p>\n<style>.lazyload-placeholder { display: none;  }<\/style>\n<p><\/noscript><\/p>\n<h2 id=\"introduction\"><span class=\"ez-toc-section\" id=\"%d9%85%d8%b9%d8%b1%d9%81%db%8c\"><\/span>\u0645\u0639\u0631\u0641\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0646\u06af\u0627\u0647\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a <em>\u0686\u06af\u0648\u0646\u0647 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 JQuery \u0645\u062e\u0641\u06cc \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631<\/em>.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0631\u0627\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-built_in\">console<\/span>.log($(myElement).is(<span class=\"hljs-string\">\":hidden\"<\/span>)) \n<span class=\"hljs-built_in\">console<\/span>.log($(myElement).is(<span class=\"hljs-string\">\":visible\"<\/span>)) \n<span class=\"hljs-built_in\">console<\/span>.log($(myElement).css(<span class=\"hljs-string\">\"visibility\"<\/span>) === <span class=\"hljs-string\">\"hidden\"<\/span>) \n<span class=\"hljs-built_in\">console<\/span>.log($(myElement).css(<span class=\"hljs-string\">\"display\"<\/span>) === <span class=\"hljs-string\">\"none\"<\/span>) \n<span class=\"hljs-built_in\">console<\/span>.log($(myElement).css(<span class=\"hljs-string\">\"opacity\"<\/span>) &lt;= <span class=\"hljs-string\">\"0\"<\/span>) \n<\/code><\/pre>\n<blockquote>\n<p>&#8220;\u0686\u0631\u0627 \u0631\u0627\u0647 \u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u062f\u06cc\u062f \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u061f&#8221;<\/p>\n<\/blockquote>\n<p>\u0639\u0648\u0627\u0645\u0644 \u0645\u062a\u0639\u062f\u062f\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u062f\u0631 \u0646\u0645\u0627\u06cc\u0627\u0646 \u0634\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0646\u0642\u0634 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f!  \u0645\u0627 \u0647\u0631 \u0645\u0648\u0631\u062f \u0631\u0627 \u067e\u0648\u0634\u0634 \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u062f \u0648 \u062f\u0631 \u0646\u0638\u0631 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06af\u0631\u0641\u062a \u06a9\u0647 \u0686\u0647 \u0632\u0645\u0627\u0646\u06cc \u0639\u0627\u0642\u0644\u0627\u0646\u0647 \u0627\u0633\u062a \u0627\u0632 \u0622\u0646\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645.  \u0627\u06af\u0631\u0686\u0647\u060c \u0627\u0628\u062a\u062f\u0627\u060c \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f \u0645\u062d\u06cc\u0637 \u0622\u0632\u0645\u0627\u06cc\u0634\u06cc \u062e\u0648\u062f \u0631\u0627 \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0646\u06cc\u0645.<\/p>\n<h2 id=\"environmentsetup\"><span class=\"ez-toc-section\" id=\"%d8%b1%d8%a7%d9%87_%d8%a7%d9%86%d8%af%d8%a7%d8%b2%db%8c_%d9%85%d8%ad%db%8c%d8%b7\"><\/span>\u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u0645\u062d\u06cc\u0637<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0622\u0645\u0648\u0632\u0634 \u0627\u0632 jQuery Core \u0646\u0633\u062e\u0647 3.6.0 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f.  \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0622\u062e\u0631\u06cc\u0646 CDN \u0631\u0627 \u0627\u0632 \u0627\u06cc\u0646 \u0633\u0627\u06cc\u062a \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0646\u06cc\u062f <a href=\"https:\/\/code.jquery.com\/\" target=\"_blank\" rel=\"nofollow noopener\">\u0648\u0628 \u0633\u0627\u06cc\u062a \u0631\u0633\u0645\u06cc \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc<\/a>.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u0634\u0631\u0648\u0639 \u06a9\u0646\u06cc\u0645 <code>index.html<\/code> \u0628\u0627 \u06a9\u062f \u062f\u06cc\u06af \u0628\u062e\u0627\u0631\u06cc \u06a9\u0647 \u0627\u06a9\u062b\u0631 \u0635\u0641\u062d\u0627\u062a \u062f\u0627\u0631\u0646\u062f \u0641\u0627\u06cc\u0644 \u06a9\u0646\u06cc\u062f \u0648 a \u0631\u0627 \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f <code>&lt;p&gt;<\/code> \u0639\u0646\u0635\u0631 \u0628\u0627 \u06a9\u0644\u0627\u0633\u06cc \u0628\u0647 \u0646\u0627\u0645 <code>first-element<\/code> \u0628\u0647 <code>&lt;body&gt;<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-meta\">&lt;!DOCTYPE <span class=\"hljs-meta-keyword\">html<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">html<\/span> <span class=\"hljs-attr\">lang<\/span>=<span class=\"hljs-string\">\"en\"<\/span>&gt;<\/span>\n\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">meta<\/span> <span class=\"hljs-attr\">charset<\/span>=<span class=\"hljs-string\">\"UTF-8\"<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">meta<\/span> <span class=\"hljs-attr\">http-equiv<\/span>=<span class=\"hljs-string\">\"X-UA-Compatible\"<\/span> <span class=\"hljs-attr\">content<\/span>=<span class=\"hljs-string\">\"IE=edge\"<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">meta<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"viewport\"<\/span> <span class=\"hljs-attr\">content<\/span>=<span class=\"hljs-string\">\"width=device-width, initial-scale=1.0\"<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"https:\/\/code.jquery.com\/jquery-3.6.0.min.js\"<\/span>\n        <span class=\"hljs-attr\">integrity<\/span>=<span class=\"hljs-string\">\"sha256-\/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej\/m4=\"<\/span> <span class=\"hljs-attr\">crossorigin<\/span>=<span class=\"hljs-string\">\"anonymous\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">title<\/span>&gt;<\/span>Document<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">title<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">body<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"first-element\"<\/span> &gt;<\/span>This is the first paragraph.<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">body<\/span>&gt;<\/span>\n\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">html<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u062d\u0627\u0644\u0627 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0627\u06cc\u0646 \u067e\u0627\u0631\u0627\u06af\u0631\u0627\u0641 \u0631\u0627 \u067e\u0646\u0647\u0627\u0646 \u06a9\u0646\u06cc\u0645 \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u06cc\u0645 \u062f\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0628\u0627 \u0622\u0646 \u062a\u0633\u062a \u06a9\u0646\u06cc\u0645 <code>.is(\":hidden\")<\/code>!  \u0628\u0631\u0627\u06cc \u067e\u0646\u0647\u0627\u0646 \u06a9\u0631\u062f\u0646 <code>first-element<\/code> \u0645\u0627 \u0628\u0647 \u0633\u0627\u062f\u06af\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u0645 <code>hidden<\/code> \u0646\u0633\u0628\u062a \u062f\u0627\u062f\u0646 \u0628\u0647 \u0622\u0646:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"first-element\"<\/span> <span class=\"hljs-attr\">hidden<\/span>&gt;<\/span>This is the first paragraph<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p><strong>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f:<\/strong> \u0628\u0627\u0631\u06af\u06cc\u0631\u06cc \u0645\u062c\u062f\u062f page \u0648 \u062a\u0627\u06cc\u06cc\u062f \u06a9\u0646\u06cc\u062f \u06a9\u0647 <code>first-element<\/code> \u062f\u06cc\u06af\u0631 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a<\/p>\n<h2 id=\"checkifelementishiddenwithishidden\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa%e2%80%9d\"><\/span>\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 <em>.\u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a&#8221;)<\/em><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 <code>.is(\":hidden\")<\/code> \u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f <code>&lt;script&gt;&lt;\/script&gt;<\/code> \u062a\u06af \u06a9\u0646\u06cc\u062f \u0648 \u06a9\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062e\u0648\u062f \u0631\u0627 \u062f\u0631 \u0622\u0646\u0647\u0627 \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f \u06cc\u0627 \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <strong>\u06a9\u0646\u0633\u0648\u0644<\/strong> \u0627\u0628\u0632\u0627\u0631 \u0645\u0631\u0648\u0631\u06af\u0631 \u0634\u0645\u0627 \u0628\u0631\u0627\u06cc \u0627\u062c\u0631\u0627\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645 \u06a9\u062f.  \u0647\u0631\u06a9\u062f\u0627\u0645 \u0631\u0627 \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u062f\u060c \u062a\u0627\u062b\u06cc\u0631\u06cc \u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u0646\u062e\u0648\u0627\u0647\u062f \u062f\u0627\u0634\u062a.<\/p>\n<p>\u062f\u0631 \u0647\u0631 \u0635\u0648\u0631\u062a\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u062e\u0631\u0648\u062c\u06cc \u0631\u0627 \u0627\u0632 \u0631\u0648\u06cc \u0622\u0646 \u0628\u062e\u0648\u0627\u0646\u06cc\u062f <strong>\u06a9\u0646\u0633\u0648\u0644<\/strong> \u0632\u0628\u0627\u0646\u0647 (\u0628\u0627 \u0641\u0634\u0627\u0631 \u062f\u0627\u062f\u0646 <code>F12<\/code> \u06cc\u0627 <code>Ctrl + Shift + I<\/code> \u0628\u0631\u0627\u06cc \u0627\u06a9\u062b\u0631 \u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627).  \u0627\u0632 \u0637\u0631\u0641 \u062f\u06cc\u06af\u0631\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u06a9\u0644\u06cc\u06a9 \u0631\u0627\u0633\u062a \u06a9\u0646\u06cc\u062f \u0631\u0648\u06cc \u0631\u0627 page \u0648 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u062f <strong>&#8220;\u0628\u0627\u0632\u0631\u0633\u06cc&#8221;<\/strong> \u0627\u0632 \u0645\u0646\u0648  \u062f\u0631 \u0641\u0627\u06cc\u0631\u0641\u0627\u06a9\u0633 \u0627\u06cc\u0646 \u0627\u0633\u062a <strong>&#8220;\u0628\u0627\u0632\u0631\u0633\u06cc \u0639\u0646\u0635\u0631&#8221;<\/strong>.<\/p>\n<p><code>.is(\":hidden\")<\/code>  \u0628\u0631 \u062e\u0648\u0627\u0647\u062f \u06af\u0634\u062a <code>true<\/code> \u0627\u06af\u0631 \u0639\u0646\u0635\u0631 \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0647 \u067e\u0646\u0647\u0627\u0646 \u0628\u0627\u0634\u062f.  \u0627\u06af\u0631 \u067e\u0646\u0647\u0627\u0646 \u0646\u0628\u0627\u0634\u062f\u060c \u0628\u0627\u0632 \u062e\u0648\u0627\u0647\u062f \u06af\u0634\u062a <code>false<\/code>.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645 \u0631\u0648\u06cc \u067e\u0646\u0647\u0627\u0646 \u0645\u0627 <code>.first-element<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".first-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is hidden?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":hidden\"<\/span>));\n<\/code><\/pre>\n<p>\u0627\u06af\u0631 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f <strong>\u06a9\u0646\u0633\u0648\u0644<\/strong> \u062f\u0631 \u062a\u0628 \u0645\u0631\u0648\u0631\u06af\u0631 \u062e\u0648\u062f\u060c \u0628\u0627\u06cc\u062f \u062e\u0631\u0648\u062c\u06cc \u0632\u06cc\u0631 \u0631\u0627 \u0645\u0634\u0627\u0647\u062f\u0647 \u06a9\u0646\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\">.first-element is hidden?: true\n<\/code><\/pre>\n<p>\u0646\u0633\u0628\u062a\u0627 \u0633\u0627\u062f\u0647 \u0627\u0633\u062a\u060c \u062f\u0631\u0633\u062a \u0627\u0633\u062a\u061f  \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0632 \u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645 <code>is(\":visible\")<\/code> \u0628\u0631\u0627\u06cc \u062a\u0623\u06cc\u06cc\u062f \u0646\u062a\u06cc\u062c\u0647 \u0641\u0639\u0644\u06cc \u0645\u0627<\/p>\n<h2 id=\"checkifelementishiddenwithisvisible\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_%d8%a7%d8%b3%d8%aa_%e2%80%9c_%d9%82%d8%a7%d8%a8%d9%84_%d9%85%d8%b4%d8%a7%d9%87%d8%af%d9%87%e2%80%9d\"><\/span>\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 <em>\u0627\u0633\u062a (&#8220;:\u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647&#8221;)<\/em><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><code>is(\":visible\")<\/code>  \u062f\u06cc\u062f \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0631\u0627 \u0622\u0632\u0645\u0627\u06cc\u0634 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u062f <code>true<\/code> \u0627\u06af\u0631 \u0639\u0646\u0635\u0631 \u0627\u0646\u062a\u062e\u0627\u0628 \u0634\u062f\u0647 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u06cc\u0627 \u0628\u0627\u0632 \u062e\u0648\u0627\u0647\u062f \u06af\u0634\u062a <code>false<\/code> \u0627\u06af\u0631 \u067e\u0646\u0647\u0627\u0646 \u0628\u0627\u0634\u062f<\/p>\n<p>\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0645\u062a\u0648\u062c\u0647 \u0634\u062f\u06cc\u062f\u060c \u062f\u0642\u06cc\u0642\u0627 \u0628\u0631\u0639\u06a9\u0633 \u0627\u06cc\u0646 \u0627\u0633\u062a <code>.is(\":hidden\")<\/code> \u0631\u0648\u0634.  \u0627\u06cc\u0646 \u0628\u062f\u0627\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0647\u0631 \u062f\u0648\u06cc \u0622\u0646\u0647\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0645\u0642\u062f\u0627\u0631 \u06cc\u06a9\u0633\u0627\u0646\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u0646\u062f.  \u0646\u0647 \u062f\u0631 \u0647\u0645\u0627\u0646 \u0632\u0645\u0627\u0646 \u062d\u062f\u0627\u0642\u0644.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0622\u0632\u0645\u0627\u06cc\u0634 \u06a9\u0646\u06cc\u0645 \u0631\u0648\u06cc \u0631\u0627 <code>first-element<\/code> \u0648 \u0646\u062a\u06cc\u062c\u0647 \u0631\u0627 \u0645\u0634\u0627\u0647\u062f\u0647 \u06a9\u0646\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".first-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is visible?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":visible\"<\/span>));\n<\/code><\/pre>\n<p>\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0627\u0646\u062a\u0638\u0627\u0631 \u0645\u06cc \u0631\u0648\u062f\u060c \u062e\u0631\u0648\u062c\u06cc a <code>false<\/code> \u0627\u0631\u0632\u0634:<\/p>\n<pre><code class=\"hljs\">.first-element is visible?: false\n<\/code><\/pre>\n<p>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u06a9\u0647 \u0647\u0646\u06af\u0627\u0645 \u06a9\u0627\u0631 \u0628\u0627 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u0645\u062e\u0641\u06cc \u0646\u06cc\u0632 \u0647\u0645\u06cc\u0646 \u0646\u062a\u0627\u06cc\u062c \u0631\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u062e\u0648\u0627\u0647\u06cc\u062f \u06a9\u0631\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">input<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"hidden\"<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"inp-element\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"3487\"<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u0627\u06af\u0631 \u0686\u0647 <code>hidden<\/code> \u067e\u0627\u0631\u0627\u0645\u062a\u0631 \u0628\u0647 \u0645\u0627 \u0645\u0646\u062a\u0642\u0644 \u0634\u062f <code>input<\/code> \u0639\u0646\u0635\u0631 \u0627\u0632 \u0637\u0631\u06cc\u0642 <code>type<\/code> \u0648\u06cc\u0698\u06af\u06cc\u060c \u0647\u0645\u0686\u0646\u0627\u0646 \u0647\u0645\u0627\u0646 \u0646\u062a\u06cc\u062c\u0647 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<p>\u062a\u0627 \u0627\u06cc\u0646\u062c\u0627\u06cc \u06a9\u0627\u0631 \u062e\u06cc\u0644\u06cc \u062e\u0648\u0628\u0647.  \u062d\u0627\u0644\u0627 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627\u0632\u06cc \u062e\u0648\u062f \u0631\u0627 \u06cc\u06a9 \u06af\u0627\u0645 \u0628\u0647 \u062c\u0644\u0648 \u0628\u0628\u0631\u06cc\u0645 \u0648 \u0628\u0628\u06cc\u0646\u06cc\u0645 \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u0631\u0627 \u06a9\u0647 \u062a\u0648\u0633\u0637 CSS \u0627\u0635\u0644\u0627\u062d \u0634\u062f\u0647 \u0627\u0633\u062a \u0622\u0632\u0645\u0627\u06cc\u0634 \u06a9\u0646\u06cc\u0645.<\/p>\n<h2 id=\"checkifelementishiddenwithcssvisibility\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%85%d8%b4%d8%a7%d9%87%d8%af%d9%87%e2%80%9d\"><\/span>\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 <em>.css (&#8220;\u0645\u0634\u0627\u0647\u062f\u0647&#8221;)<\/em><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u062f\u0648 \u0645\u0648\u0631\u062f \u062f\u06cc\u06af\u0631 \u0631\u0627 \u0628\u0647 DOM \u062e\u0648\u062f \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"second-element\"<\/span>&gt;<\/span>This is the second paragraph.<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"third-element\"<\/span>&gt;<\/span>This is the third paragraph.<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u062e\u0648\u062f \u0631\u0627 \u062a\u0627\u0632\u0647\/\u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0645\u062c\u062f\u062f \u06a9\u0646\u06cc\u062f page \u0648 \u062a\u0623\u06cc\u06cc\u062f \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0639\u0646\u0627\u0635\u0631 \u062c\u062f\u06cc\u062f \u0627\u0636\u0627\u0641\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n<p>\u062d\u0627\u0644\u0627 \u0645\u0627 \u0622\u0646 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u062f <code>visibility<\/code> \u062f\u0627\u0631\u0627\u06cc\u06cc \u0627\u0632 <code>second-element<\/code>.  \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u06cc\u06a9 \u0641\u0627\u06cc\u0644 CSS \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f \u0648 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0641\u0627\u06cc\u0644 HTML \u062e\u0648\u062f \u067e\u06cc\u0648\u0646\u062f \u062f\u0647\u06cc\u062f \u06cc\u0627 \u06a9\u062f CSS \u062e\u0648\u062f \u0631\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0622\u0646 \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f <code>&lt;head&gt;<\/code> \u062a\u06af \u0641\u0627\u06cc\u0644 HTML \u0634\u0645\u0627\u060c \u062f\u0631 \u062f\u0627\u062e\u0644 <code>&lt;style&gt;&lt;\/style&gt;<\/code> \u0628\u0631\u0686\u0633\u0628 \u0647\u0627:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-selector-class\">.second-element<\/span>{\n    <span class=\"hljs-attribute\">visibility<\/span>: hidden; \n}\n<\/code><\/pre>\n<p>\u062d\u0627\u0644\u0627 \u0627\u06cc\u0646 \u0642\u0633\u0645\u062a \u06a9\u0645\u06cc \u0645\u0634\u06a9\u0644 \u0627\u0633\u062a.  \u0642\u0628\u0644 \u0627\u0632 \u0628\u0627\u0631\u06af\u06cc\u0631\u06cc \u0645\u062c\u062f\u062f page\u060c \u0628\u0647 \u0645\u0648\u0642\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u062f <code>third-element<\/code>.  \u0627\u06af\u0631 \u0631\u0641\u0631\u0634 \u06a9\u0646\u06cc\u062f page\u060c \u0645\u062a\u0648\u062c\u0647 \u062e\u0648\u0627\u0647\u06cc\u062f \u0634\u062f \u06a9\u0647 <code>second-element<\/code> \u062f\u06cc\u06af\u0631 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a\u060c <em>\u0627\u0645\u0627 \u0647\u0645\u0686\u0646\u0627\u0646 \u0647\u0645\u0627\u0646 \u0641\u0636\u0627 \u0631\u0627 \u0627\u0634\u063a\u0627\u0644 \u0645\u06cc \u06a9\u0646\u062f<\/em>.  \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a\u060c \u0647\u0646\u0648\u0632 \u0645\u0648\u0642\u0639\u06cc\u062a \u0627\u0632 <code>third-element<\/code> \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u06a9\u0647 \u0647\u0646\u0648\u0632 \u0622\u0646\u062c\u0627\u0633\u062a.  \u062f\u0631 \u0648\u0627\u0642\u0639\u060c \u0627\u06af\u0631 \u067e\u06cc\u0634 \u0628\u0631\u0648\u06cc\u0645 \u0648 \u062a\u0648\u0627\u0628\u0639 \u0642\u0628\u0644\u06cc \u062e\u0648\u062f \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0639\u0646\u0635\u0631 \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".second-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is hidden?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":hidden\"<\/span>));\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is visible?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":visible\"<\/span>));\n<\/code><\/pre>\n<p>\u0645\u0627 \u0628\u0647 \u0646\u062a\u06cc\u062c\u0647 \u0627\u06cc \u06a9\u0647 \u0647\u0633\u062a \u0645\u06cc \u0631\u0633\u06cc\u062f\u06cc\u0645 <strong>\u0646\u0647<\/strong> \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u0647\u0645\u0686\u0646\u0627\u0646 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0627\u0633\u062a:<\/p>\n<pre><code class=\"hljs\">.second-element is hidden?: false\n.second-element is visible?: true\n<\/code><\/pre>\n<p>\u062f\u0644\u06cc\u0644 \u0622\u0646 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0648\u0642\u062a\u06cc \u0634\u0645\u0627 \u062a\u0646\u0638\u06cc\u0645 \u0645\u06cc \u06a9\u0646\u06cc\u062f <code>visibility<\/code> \u062f\u0627\u0631\u0627\u06cc\u06cc \u0628\u0647 <code>hidden<\/code>\u060c \u0646\u0627\u0645\u0631\u0626\u06cc \u0645\u06cc \u0634\u0648\u062f <em>\u0648\u0644\u06cc<\/em> \u0647\u0646\u0648\u0632 \u0647\u0645 \u062a\u0648\u0633\u0637 \u0645\u0631\u0648\u0631\u06af\u0631 \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u062f\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0641\u0636\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 \u062e\u0648\u062f \u0631\u0627 \u0627\u0634\u063a\u0627\u0644 \u0645\u06cc \u06a9\u0646\u062f.  \u0627\u06a9\u062b\u0631 \u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627 \u062f\u0631 \u0635\u0648\u0631\u062a \u0648\u062c\u0648\u062f \u0639\u0646\u0627\u0635\u0631 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0631\u0627 \u062f\u0631 \u0646\u0638\u0631 \u0645\u06cc \u06af\u06cc\u0631\u0646\u062f <code>height<\/code> \u0648\/\u06cc\u0627 <code>width<\/code>.  \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u0647\u0631 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0627\u0628\u0639\u0627\u062f \u0635\u0641\u0631\u060c \u067e\u0646\u0647\u0627\u0646 \u062f\u0631 \u0646\u0638\u0631 \u06af\u0631\u0641\u062a\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p>\u0627\u06a9\u0646\u0648\u0646 \u06a9\u0647 \u0645\u06cc \u062f\u0627\u0646\u06cc\u0645 \u0628\u0627 \u0686\u0647 \u0686\u06cc\u0632\u06cc \u0633\u0631 \u0648 \u06a9\u0627\u0631 \u062f\u0627\u0631\u06cc\u0645\u060c \u062a\u0646\u0647\u0627 \u06a9\u0627\u0631\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u0645 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 <code>visibility<\/code> \u0648\u06cc\u0698\u06af\u06cc \u0639\u0646\u0635\u0631 \u062a\u0646\u0638\u06cc\u0645 \u0634\u062f\u0647 \u0627\u0633\u062a <code>hidden<\/code>\u060c \u0646\u0647 \u0627\u06cc\u0646\u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 <em>\u062e\u0648\u062f<\/em> \u0627\u0633\u062a <code>hidden<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".second-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is visibility === hidden?: \"<\/span> + ($(myElement).css(<span class=\"hljs-string\">\"visibility\"<\/span>) === <span class=\"hljs-string\">\"hidden\"<\/span>));\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0628\u0627\u0632 \u062e\u0648\u0627\u0647\u062f \u06af\u0634\u062a <code>true<\/code>:<\/p>\n<pre><code class=\"hljs\">.second-element is visibility === hidden?: true\n<\/code><\/pre>\n<p>\u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u062f\u0631 \u062d\u0627\u0644 \u0627\u0646\u062c\u0627\u0645 \u0622\u0646 \u0647\u0633\u062a\u06cc\u0645\u060c \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0633\u0627\u06cc\u0631 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc CSS \u0628\u0631 \u0631\u0648\u06cc \u062f\u06cc\u062f \u062a\u0623\u062b\u06cc\u0631 \u0645\u06cc \u06af\u0630\u0627\u0631\u062f.<\/p>\n<h2 id=\"checkifelementishiddenwithcssdisplay\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%86%d9%85%d8%a7%db%8c%d8%b4%e2%80%9d\"><\/span>\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 <em>.css (&#8220;\u0646\u0645\u0627\u06cc\u0634&#8221;)<\/em><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u06cc\u06a9\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0632 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc CSS \u06a9\u0647 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u0631\u0627\u06cc \u067e\u0646\u0647\u0627\u0646 \u06a9\u0631\u062f\u0646 \u0639\u0646\u0627\u0635\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u0627\u06cc\u0646 \u0627\u0633\u062a <code>display<\/code>.  \u0645\u0627 \u062f\u0631 \u062d\u0627\u0644 \u062d\u0627\u0636\u0631 \u062e\u0648\u062f \u0631\u0627 \u062f\u0627\u0631\u06cc\u0645 <code>third-element<\/code> \u062f\u0631 DOM \u0645\u0627 \u0622\u0645\u0627\u062f\u0647 \u0627\u0633\u062a.  \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u062a\u0646\u0647\u0627 \u06a9\u0627\u0631\u06cc \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u0645 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0622\u0646 \u0631\u0627 \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0646\u06cc\u0645 <code>display<\/code> \u0628\u0647 <code>none<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-selector-class\">.third-element<\/span> {\n    <span class=\"hljs-attribute\">display<\/span>: none; \n}\n<\/code><\/pre>\n<p>\u067e\u0633 \u0627\u0632 \u062a\u0627\u0632\u0647 \u06a9\u0631\u062f\u0646 page\u060c \u0645\u06cc \u0628\u06cc\u0646\u06cc\u062f \u06a9\u0647 \u062f\u06cc\u06af\u0631 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a.<\/p>\n<p>\u062f\u0631 \u062d\u0627\u0644 \u062d\u0627\u0636\u0631\u060c \u0686\u06cc\u0632 \u062e\u0648\u0628 \u062f\u0631 \u0645\u0648\u0631\u062f <code>display: none;<\/code> \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u062f\u0631\u0633\u062a\u06cc \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u0628\u0644\u06cc \u062e\u0648\u062f \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u0645 <code>is(\":hidden\")<\/code> \u0648 <code>is(\":visible\")<\/code> \u0645\u0648\u0627\u062f \u0648 \u0631\u0648\u0634 \u0647\u0627:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".third-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is hidden?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":hidden\"<\/span>));\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is visible?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":visible\"<\/span>));\n<\/code><\/pre>\n<p>\u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0631\u0648\u0631\u06af\u0631 \u0622\u0646 \u0631\u0627 \u0631\u0646\u062f\u0631 \u0646\u0645\u06cc \u06a9\u0646\u062f <code>third-element<\/code>\u060c \u0646\u062a\u0627\u06cc\u062c \u0631\u0627 \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0627\u0646\u062a\u0638\u0627\u0631 \u0645\u06cc \u0631\u0648\u062f \u062f\u0631\u06cc\u0627\u0641\u062a \u0645\u06cc \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\">.third-element is hidden?: true\n.third-element is visible?: false\n<\/code><\/pre>\n<p>\u0645\u0627 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0622\u0646 \u0631\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>.css()<\/code> \u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".third-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is css.display == none?: \"<\/span> + ($(myElement).css(<span class=\"hljs-string\">\"display\"<\/span>) === <span class=\"hljs-string\">\"none\"<\/span>));\n<\/code><\/pre>\n<p>\u0648 \u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u062e\u0631\u0648\u062c\u06cc \u0632\u06cc\u0631 \u0631\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f:<\/p>\n<pre><code class=\"hljs\">.third-element is css.display == none?: true\n<\/code><\/pre>\n<p>\u0631\u0627\u0647 \u062f\u06cc\u06af\u0631 \u0628\u0631\u0627\u06cc \u0646\u0627\u0645\u0631\u0626\u06cc \u06a9\u0631\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 Opacity \u0622\u0646 \u0631\u0627 \u0635\u0641\u0631 \u06a9\u0646\u06cc\u062f.  \u062f\u0631 \u0642\u0633\u0645\u062a \u0628\u0639\u062f\u06cc \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u06cc\u0645\u060c opacity \u0622\u0646 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u062f\u0647\u06cc\u0645 \u0648 \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631.<\/p>\n<h2 id=\"checkifelementishiddenwithcssopacity\"><span class=\"ez-toc-section\" id=\"%d8%a8%d8%b1%d8%b1%d8%b3%db%8c_%da%a9%d9%86%db%8c%d8%af_%da%a9%d9%87_%d8%a2%db%8c%d8%a7_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a2%d9%86_%d9%be%d9%86%d9%87%d8%a7%d9%86_%d8%a7%d8%b3%d8%aa_%db%8c%d8%a7_%d8%ae%db%8c%d8%b1_css_%e2%80%9c%d9%85%d8%b9%d8%b1%d9%88%d9%81_%d8%a8%d9%88%d8%af%d9%86%e2%80%9d\"><\/span>\u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0622\u0646 \u067e\u0646\u0647\u0627\u0646 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631 <em>.css (&#8220;\u0645\u0639\u0631\u0648\u0641 \u0628\u0648\u062f\u0646&#8221;)<\/em><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0646\u0627\u0645\u0631\u0626\u06cc \u06a9\u0631\u062f\u0646 \u06cc\u06a9 \u0622\u06cc\u062a\u0645 \u0627\u0632 \u0637\u0631\u06cc\u0642 opacity \u0645\u0634\u0627\u0628\u0647 \u0628\u0627 \u062a\u0646\u0638\u06cc\u0645 \u0639\u0645\u0644 \u0645\u06cc \u06a9\u0646\u062f <code>visibility<\/code> \u062f\u0627\u0631\u0627\u06cc\u06cc \u0628\u0647 <code>hidden<\/code>.  \u0628\u0647 \u0647\u0645\u06cc\u0646 \u062f\u0644\u06cc\u0644\u060c \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0628\u0647\u062a\u0631 \u062a\u063a\u06cc\u06cc\u0631\u060c \u062f\u0648 \u0639\u0646\u0635\u0631 \u062f\u06cc\u06af\u0631 \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"fourth-element\"<\/span>&gt;<\/span>This is the fourth paragraph.<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"visible-element\"<\/span>&gt;<\/span>Lorem ipsum dolor sit amet consectetur adipisicing elit. Quis corrupti inventore, et beatae accusantium perferendis?<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u062d\u0627\u0644\u0627 \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0645\u0642\u062f\u0627\u0631\u06cc \u0628\u0627\u0644\u0634\u062a\u06a9 \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u0645 \u062a\u0627 \u0628\u0631 \u0641\u0636\u0627\u06cc \u0627\u0634\u063a\u0627\u0644 \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u0622\u0646 \u062a\u0627\u06a9\u06cc\u062f \u06a9\u0646\u06cc\u0645 <code>fourth-element<\/code>\u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 opacity \u0622\u0646 \u0631\u0627 \u0635\u0641\u0631 \u06a9\u0646\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-selector-class\">.fourth-element<\/span> {\n    <span class=\"hljs-attribute\">padding<\/span>: <span class=\"hljs-number\">30px<\/span>;\n    <span class=\"hljs-attribute\">opacity<\/span>: <span class=\"hljs-number\">0<\/span>;\n}\n<\/code><\/pre>\n<p>\u0637\u0631\u0627\u0648\u062a \u06a9\u0631\u062f\u0646 page\u060c \u0645\u062a\u0648\u062c\u0647 \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0622\u0646 \u062e\u0648\u0627\u0647\u06cc\u062f \u0634\u062f <code>fourth-element<\/code>.  \u062f\u0627\u0631\u0627\u06cc \u0627\u0628\u0639\u0627\u062f \u0627\u0633\u062a\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u0645\u0627 \u0645\u0627\u062a \u0646\u06cc\u0633\u062a\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a.<\/p>\n<p>\u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0628\u0647 \u0637\u0648\u0631 \u0637\u0628\u06cc\u0639\u06cc\u060c \u062a\u0645\u0627\u0645 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0632\u06cc\u0631:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".fourth-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is hidden?: \"<\/span> + $(myElement).is(<span class=\"hljs-string\">\":hidden\"<\/span>));\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is visibility === hidden?: \"<\/span> + ($(myElement).css(<span class=\"hljs-string\">\"visibility\"<\/span>) === <span class=\"hljs-string\">\"hidden\"<\/span>));\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is css.display == none?: \"<\/span> + ($(myElement).css(<span class=\"hljs-string\">\"display\"<\/span>) === <span class=\"hljs-string\">\"none\"<\/span>));\n<\/code><\/pre>\n<p>\u0628\u0631 \u062e\u0648\u0627\u0647\u062f \u06af\u0634\u062a <code>false<\/code>:<\/p>\n<pre><code class=\"hljs\">.fourth-element is hidden?: false\n.fourth-element is visibility === hidden?: false\n.fourth-element is css.display == none?: false\n<\/code><\/pre>\n<p>\u062a\u0646\u0647\u0627 \u0631\u0627\u0647 \u0628\u0631\u0627\u06cc <em>\u06af\u0631\u0641\u062a\u0646<\/em> \u0627\u06cc\u0646 \u0639\u0646\u0635\u0631 \u0646\u0627\u0645\u0631\u0626\u06cc\u060c \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>.css(\"opacity\")<\/code> \u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">var<\/span> myElement = <span class=\"hljs-string\">\".fourth-element\"<\/span>;\n<span class=\"hljs-built_in\">console<\/span>.log(myElement + <span class=\"hljs-string\">\" is opacity lesser than or equal to 0?: \"<\/span> + ($(myElement).css(<span class=\"hljs-string\">\"opacity\"<\/span>) &lt;= <span class=\"hljs-string\">\"0\"<\/span>));\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u062f <code>true<\/code>:<\/p>\n<pre><code class=\"hljs\">.fourth-element is opacity lesser than or equal to 0?: true\n<\/code><\/pre>\n<p>\u0648 \u0627\u06cc\u0646 \u0622\u0645\u0648\u0632\u0634 \u0645\u0627 \u0631\u0627 \u0628\u0647 \u067e\u0627\u06cc\u0627\u0646 \u0645\u06cc \u0631\u0633\u0627\u0646\u062f \u0631\u0648\u06cc \u0686\u06af\u0648\u0646\u0647 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0645\u062e\u0641\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631!<\/p>\n<h2 id=\"conclusion\"><span class=\"ez-toc-section\" id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\"><\/span>\u0646\u062a\u06cc\u062c\u0647<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0622\u0645\u0648\u0632\u0634 \u06cc\u0627\u062f \u06af\u0631\u0641\u062a\u06cc\u0645 \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0631\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631\u0647\u0627\u06cc jQuery \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645.  \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 <code>.is(\":hidden\")<\/code>\u060c <code>is(\":visible\")<\/code>\u060c \u0648 <code>.css(\"display\")<\/code> \u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631\u0647\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u062e\u0648\u0628\u06cc \u0628\u0631\u0627\u06cc \u0627\u0646\u062a\u062e\u0627\u0628 \u0639\u0646\u0627\u0635\u0631 \u0631\u0646\u062f\u0631 \u0646\u0634\u062f\u0647 \u0647\u0633\u062a\u0646\u062f\u060c <code>.css(\"visibility\")<\/code> \u0648 <code>.css(\"opacity\")<\/code> \u0628\u0647\u062a\u0631\u06cc\u0646 \u06af\u0632\u06cc\u0646\u0647 \u0628\u0631\u0627\u06cc \u0639\u0646\u0627\u0635\u0631\u06cc \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u0646\u062f \u0627\u0645\u0627 \u0628\u0631\u0627\u06cc \u0686\u0634\u0645 \u0627\u0646\u0633\u0627\u0646 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a\u0646\u062f.<\/p>\n<\/div>\n<p><br \/>\n<br \/>\u0645\u0646\u062a\u0634\u0631 \u0634\u062f\u0647 \u062f\u0631 1403-01-16 05:47:03<br \/>\n<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;15731&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0627\u0645\u062a\u06cc\u0627\u0632 \u0634\u0645\u0627 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628&quot;,&quot;legend&quot;:&quot;0\\\/5 (0 \u0631\u0627\u06cc)&quot;,&quot;size&quot;:&quot;30&quot;,&quot;title&quot;:&quot;\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a: \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0645\u062e\u0641\u06cc \u0627\u0633\u062a \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0646\u06af\u0627\u0647\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a \u0628\u0647 \u0631\u0648\u0634 \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0645\u062e\u0641\u06cc \u0634\u062f\u0647 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631.  \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0631\u0627\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f:  console.log($(myElement).is(\\u0026quot;:hidden\\u0026quot;))  console.log($(myElement).is(\\u0026quot;:visible\\u0026quot;))  console.log($(myElement).css(...&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} ({count} \u0631\u0627\u06cc)&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 24px;\">\n            <span class=\"kksr-muted\">\u0627\u0645\u062a\u06cc\u0627\u0632 \u0634\u0645\u0627 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 6<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span>\u0645\u0639\u0631\u0641\u06cc \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0646\u06af\u0627\u0647\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a \u0686\u06af\u0648\u0646\u0647 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 JQuery \u0645\u062e\u0641\u06cc \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631. \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0631\u0627\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0646\u0645\u0627\u06cc\u0627\u0646 \u0628\u0648\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f: console.log($(myElement).is(&#8220;:hidden&#8221;)) console.log($(myElement).is(&#8220;:visible&#8221;)) console.log($(myElement).css(&#8220;visibility&#8221;) === &#8220;hidden&#8221;) console.log($(myElement).css(&#8220;display&#8221;) === &#8220;none&#8221;) console.log($(myElement).css(&#8220;opacity&#8221;) &lt;= &#8220;0&#8221;) &#8220;\u0686\u0631\u0627 \u0631\u0627\u0647 \u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u062f\u06cc\u062f \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u061f&#8221; \u0639\u0648\u0627\u0645\u0644 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":9045,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1772,620],"tags":[4167,4165,4166,1252,1844,2147,1811,1781,1789,2679,2140,1779,1814,1970,1965,1807,3371,4014,1780,1103,4028,1971,2289,2258,3646,2750,1889,1973,2123,2097,2802,1806,1795,4029,4163,2799,1966,2322,3720,4164,1765,2250,2169,1831,1813],"class_list":{"0":"post-15731","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-javascript","8":"category-programming","9":"tag-console-logmyelement-css","10":"tag-console-logmyelement-isquothiddenquot","11":"tag-console-logmyelement-isquotvisiblequot","12":"tag--nodejs","13":"tag-1844","14":"tag-2147","15":"tag-1811","16":"tag-1781","17":"tag-1789","18":"tag-2679","19":"tag-2140","20":"tag-1779","21":"tag-1814","22":"tag-1970","23":"tag-1965","24":"tag-1807","25":"tag-3371","26":"tag-4014","27":"tag-1780","28":"tag-1103","29":"tag-4028","30":"tag-1971","31":"tag-2289","32":"tag-2258","33":"tag-3646","34":"tag-2750","35":"tag-1889","36":"tag-1973","37":"tag-2123","38":"tag-2097","39":"tag-2802","40":"tag-1806","41":"tag-1795","42":"tag-4029","43":"tag-4163","44":"tag-2799","45":"tag--javascrip","46":"tag-2322","47":"tag-3720","48":"tag-4164","49":"tag-1765","51":"tag-2169","52":"tag-1831","53":"tag-1813"},"acf":[],"_links":{"self":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts\/15731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/comments?post=15731"}],"version-history":[{"count":0,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/posts\/15731\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/media\/9045"}],"wp:attachment":[{"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/media?parent=15731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/categories?post=15731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rasanegaar.com\/blog\/wp-json\/wp\/v2\/tags?post=15731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}