{"id":15754,"date":"2024-01-16T16:13:12","date_gmt":"2024-01-16T12:43:12","guid":{"rendered":"https:\/\/rasanegar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/"},"modified":"2024-01-16T16:13:12","modified_gmt":"2024-01-16T12:43:12","slug":"%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88","status":"publish","type":"post","link":"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/","title":{"rendered":"\u0631\u0648\u0634 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 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href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%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%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%af%d8%b1%d8%ae%d8%aa_dom\" >\u062f\u0631\u062e\u062a DOM<\/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%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1\" >\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementsbyclassname\" >\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 getElementsByClassName()<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementbyid\" >\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 getElementById()<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementsbytagname\" >\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 getElementsByTagName()<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%aa%d8%ba%db%8c%db%8c%d8%b1_%da%a9%d9%84%d8%a7%d8%b3_%db%8c%da%a9_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa\" >\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" 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href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d8%aa%d8%ba%db%8c%db%8c%d8%b1_%da%a9%d9%84%d8%a7%d8%b3_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%da%a9%d9%84%d8%a7%d8%b3_%d9%84%db%8c%d8%b3%d8%aa\" >\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 \u0628\u0627 \u06a9\u0644\u0627\u0633 \u0644\u06cc\u0633\u062a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d9%88%d8%b4-%d8%aa%d8%ba%db%8c%db%8c%d8%b1-%da%a9%d9%84%d8%a7%d8%b3-%d8%b9%d9%86%d8%b5%d8%b1-%d8%a8%d8%a7-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-classname-%d9%88\/#%d9%86%d8%aa%db%8c%d8%ac%d9%87\" >\u0646\u062a\u06cc\u062c\u0647<\/a><\/li><\/ul><\/nav><\/div>\n<span 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\u0628\u0646\u0648\u06cc\u0633\u06cc\u062f.<\/p>\n<p>\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u06af\u0641\u062a\u0647 \u0634\u062f\u060c \u06af\u0627\u0647\u06cc \u0627\u0648\u0642\u0627\u062a \u0634\u0645\u0627 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0633\u0628\u06a9 \u062e\u0648\u062f \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f <em>\u0628\u0647 \u0635\u0648\u0631\u062a \u067e\u0648\u06cc\u0627<\/em>\u060c \u0628\u0633\u062a\u0647 \u0628\u0647 \u0631\u0648\u06cc \u0648\u0631\u0648\u062f\u06cc \u06a9\u0627\u0631\u0628\u0631  \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0634\u0645\u0627 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u062d\u0627\u0644\u062a \u0631\u0648\u0632\/\u0634\u0628 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0648\u0628 \u062e\u0648\u062f \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f page\u060c \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0637\u0648\u0631 \u0645\u0648\u062b\u0631 \u0628\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 \u0627\u0646\u062c\u0627\u0645 \u0634\u0648\u062f.<\/p>\n<p>\u0627\u06cc\u0646 \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627\u06cc\u062c \u0628\u0631\u0627\u06cc \u0632\u0645\u0627\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0628\u0647 \u06a9\u0627\u0631\u0628\u0631 \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f \u0647\u0631 \u062c\u0646\u0628\u0647 \u0627\u06cc \u0627\u0632 \u0628\u0631\u0646\u0627\u0645\u0647 \u0634\u0645\u0627 \u0631\u0627 \u0633\u0641\u0627\u0631\u0634\u06cc \u06a9\u0646\u062f.  \u062f\u0631 \u0627\u06cc\u0646 \u0631\u0627\u0647\u0646\u0645\u0627 &#8211; \u0645\u0627 \u0646\u06af\u0627\u0647\u06cc \u0628\u0647 <em>\u0631\u0648\u0634 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631 HTML \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/em>.<\/p>\n<h2 id=\"domtree\"><span class=\"ez-toc-section\" id=\"%d8%af%d8%b1%d8%ae%d8%aa_dom\"><\/span>\u062f\u0631\u062e\u062a DOM<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0631\u0627 <strong>DOM<\/strong> \u06cc\u0627 <strong>\u0645\u062f\u0644 \u0634\u06cc\u0621 \u0633\u0646\u062f<\/strong> \u0631\u0627\u0628\u0637\u06cc \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0633\u0627\u062e\u062a\u0627\u0631 \u062f\u0631\u062e\u062a\u06cc \u0627\u0632 XML \u06cc\u0627 HTML \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f.  \u0633\u0644\u0633\u0644\u0647 \u0645\u0631\u0627\u062a\u0628 \u0639\u0646\u0627\u0635\u0631 \u0633\u0646\u062f \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f <em>DOM<\/em>.  \u06cc\u06a9 \u062f\u0631\u062e\u062a \u0627\u0632 \u06af\u0631\u0647 \u0647\u0627 \u0648 \u0634\u0627\u062e\u0647 \u0647\u0627 \u062a\u0634\u06a9\u06cc\u0644 \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0639\u0646\u0627\u0635\u0631 \u06af\u0631\u0647 \u0647\u0633\u062a\u0646\u062f \u0648 \u0631\u0648\u0627\u0628\u0637 \u0639\u0646\u0627\u0635\u0631 \u0634\u0627\u062e\u0647 \u0647\u0633\u062a\u0646\u062f.  \u062f\u0631 \u062f\u0631\u062e\u062a DOM\u060c root node  \u0627\u0633\u062a <em>html<\/em> &#8211; \u0627\u0648\u0644\u06cc\u0646 \u0639\u0646\u0635\u0631 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0634\u0631\u0648\u0639 \u0639\u0644\u0627\u0645\u062a \u06af\u0630\u0627\u0631\u06cc \u06cc\u06a9 \u0633\u0646\u062f HTML:<\/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>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">title<\/span>&gt;<\/span>Web page title<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<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">body<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h1<\/span>&gt;<\/span>Some heading<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h1<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">body<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">html<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u062f\u0631\u062e\u062a DOM \u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 page \u0628\u0647 \u0627\u06cc\u0646 \u0634\u06a9\u0644 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/rasanegar.com\/blog\/wp-content\/uploads\/2024\/01\/how-to-change-elements-class-with-javascript-classname-and-classlist-1.png\" alt=\"\" title=\"\"><\/p>\n<p>\u0627\u06cc\u0646 \u06cc\u06a9 \u062f\u0631\u062e\u062a \u0628\u0633\u06cc\u0627\u0631 \u0633\u0627\u062f\u0647 \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u06cc\u06a9\u0633\u0627\u0646 \u0627\u0633\u062a process \u0628\u0631\u0627\u06cc \u0647\u0631 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u062f\u0644\u062e\u0648\u0627\u0647 \u0627\u0639\u0645\u0627\u0644 \u0645\u06cc \u0634\u0648\u062f page.  \u0628\u0647 \u0644\u0637\u0641 \u062f\u0631\u062e\u062a DOM\u060c \u0627\u0632 \u0637\u0631\u06cc\u0642 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0647 \u062a\u0645\u0627\u0645 \u0639\u0646\u0627\u0635\u0631 HTML \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u0645 \u0631\u0648\u06cc \u0631\u0627 page\u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 \u06a9\u0644\u0627\u0633\u200c\u0647\u0627\u06cc \u0639\u0646\u0627\u0635\u0631\u060c \u0634\u0646\u0627\u0633\u0647\u200c\u0647\u0627\u060c \u0645\u062d\u062a\u0648\u0627 \u0648 \u062a\u0645\u0627\u0645 \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc \u0622\u0646\u200c\u0647\u0627.  \u0645\u0627 \u062d\u062a\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0639\u0646\u0627\u0635\u0631 \u062c\u062f\u06cc\u062f \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u0645 \u0648 \u0645\u0648\u0627\u0631\u062f \u0642\u062f\u06cc\u0645\u06cc \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u0645.  \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc\u06cc \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u0645 \u062a\u0627 \u0628\u0647 \u0622\u0646\u0647\u0627 \u06af\u0648\u0634 \u062f\u0647\u06cc\u0645 \u0648 \u0628\u0647 \u0622\u0646\u0647\u0627 \u067e\u0627\u0633\u062e \u062f\u0647\u06cc\u0645 (\u06cc\u0639\u0646\u06cc \u0631\u0646\u06af \u067e\u0633 \u0632\u0645\u06cc\u0646\u0647 \u0631\u0627 \u0628\u0627 \u06a9\u0644\u06cc\u06a9 \u0631\u0648\u06cc \u062f\u06a9\u0645\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u0645).<\/p>\n<h2 id=\"gettingtheelements\"><span class=\"ez-toc-section\" id=\"%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1\"><\/span>\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062d\u0627\u0644\u0627 \u06a9\u0647 \u0645\u06cc \u062f\u0627\u0646\u06cc\u0645 \u06a9\u0647 \u0645\u0627 <em>\u0645\u06cc \u062a\u0648\u0627\u0646<\/em> \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0627\u0632 HTML \u0628\u062f\u0633\u062a \u0622\u0648\u0631\u06cc\u062f\u060c \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0628\u06cc\u0646\u06cc\u0645 \u06a9\u0647 \u0686\u06af\u0648\u0646\u0647 \u062f\u0631 \u0648\u0627\u0642\u0639 <em>\u0627\u0646\u062c\u0627\u0645 \u062f\u0627\u062f\u0646<\/em> \u06a9\u0647 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a  \u0628\u0631\u0627\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631\u060c \u0627\u0628\u062a\u062f\u0627 \u0628\u0627\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u06a9\u0646\u06cc\u0645.  \u0628\u0633\u062a\u0647 \u0628\u0647 \u0631\u0648\u06cc \u0639\u0646\u0635\u0631\u060c \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0686\u0646\u062f \u0631\u0648\u06cc\u06a9\u0631\u062f \u0645\u062e\u062a\u0644\u0641 \u0628\u0647 \u062f\u0633\u062a \u0622\u0648\u0631\u06cc\u0645:<\/p>\n<ul>\n<li><code>getElementsByClassName(class_name)<\/code>  &#8211; \u06cc\u06a9 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>HTMLCollection<\/code> \u06a9\u0647 \u062d\u0627\u0648\u06cc \u0639\u0646\u0627\u0635\u0631 HTML \u0627\u0633\u062a \u06a9\u0647 \u0646\u0627\u0645 \u06a9\u0644\u0627\u0633 \u0622\u0646\u0647\u0627 \u0628\u0631\u0627\u0628\u0631 \u0627\u0633\u062a <code>class_name<\/code>.<\/li>\n<li><code>getElementById(id_name)<\/code>  &#8211; \u06cc\u06a9 \u0639\u0646\u0635\u0631 HTML \u06a9\u0647 id \u0622\u0646 \u0628\u0631\u0627\u0628\u0631 \u0627\u0633\u062a \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>id_name<\/code>.<\/li>\n<li><code>getElementsByTagName(tag_name)<\/code>  &#8211; \u06cc\u06a9 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>HTMLCollection<\/code> \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0628\u0631\u0686\u0633\u0628 <code>tag_name<\/code>.<\/li>\n<\/ul>\n<p>\u0645\u0627 \u0628\u0627 \u0627\u06cc\u0646 \u0641\u0627\u06cc\u0644 HTML \u06a9\u0627\u0631 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f:<\/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>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">title<\/span>&gt;<\/span>Web page title<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<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">body<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"page-body\"<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h1<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"headings\"<\/span>&gt;<\/span>Some heading<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h1<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h3<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"headings\"<\/span>&gt;<\/span>More of some heading<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h3<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h5<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"headings\"<\/span>&gt;<\/span>Another heading here<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h5<\/span>&gt;<\/span>\n    \n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">a<\/span> <span class=\"hljs-attr\">href<\/span>=<span class=\"hljs-string\">\"https:\/\/www.google.com\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"link-to-google\"<\/span>&gt;<\/span>Some random link<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">a<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">ul<\/span>&gt;<\/span>\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">li<\/span>&gt;<\/span>Thing #1<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">li<\/span>&gt;<\/span>\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">li<\/span>&gt;<\/span>Thing #2<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">li<\/span>&gt;<\/span>\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">li<\/span>&gt;<\/span>Thing #3<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">li<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">ul<\/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\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"script.js\"<\/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\">html<\/span>&gt;<\/span>\n<\/code><\/pre>\n<h3 id=\"gettingelementsusinggetelementsbyclassname\"><span class=\"ez-toc-section\" id=\"%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementsbyclassname\"><\/span>\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>getElementsByClassName()<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0633\u0627\u0632\u06cc\u0645 <code>script.js<\/code> \u0641\u0627\u06cc\u0644\u06cc \u06a9\u0647 \u0628\u0647 \u0645\u0627 \u0648\u0627\u0631\u062f \u0634\u062f\u0647 \u0627\u0633\u062a page:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-meta\">$<\/span><span class=\"bash\"> touch script.js<\/span>\n<\/code><\/pre>\n<p>\u0648 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0622\u0646 &#8211; \u0639\u0646\u0627\u0635\u0631\u06cc \u0631\u0627 \u06a9\u0647 \u0628\u0647 &#8220;\u0639\u0646\u0648\u0627\u0646&#8221; \u062a\u0639\u0644\u0642 \u062f\u0627\u0631\u0646\u062f\u060c \u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u0647 \u0648 \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645. <code>class<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-built_in\">document<\/span>.getElementsByClassName(<span class=\"hljs-string\">\"headings\"<\/span>));\n<\/code><\/pre>\n<p>\u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0627\u062d\u062a\u0645\u0627\u0644\u0627\u064b \u0628\u06cc\u0634 \u0627\u0632 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0645\u062a\u0639\u0644\u0642 \u0628\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f &#8211; \u0627\u06cc\u0646 \u06cc\u06a9 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>HTMLCollection<\/code>:<\/p>\n<pre><code class=\"hljs\">HTMLCollection(3)\n    - 0: h1.headings\n    - 1: h3.headings\n    - 2: h5.headings\n    length: 3\n<\/code><\/pre>\n<p>\u06cc\u06a9 <strong><code>HTMLCollection<\/code><\/strong>  \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u06cc \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 HTML \u0627\u0633\u062a \u06a9\u0647 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u0646\u062a\u062e\u0627\u0628 \u0622\u0646\u0647\u0627 \u0627\u0632 \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f\u060c \u0645\u0627\u0646\u0646\u062f:<\/p>\n<ul>\n<li><code>className()<\/code>  &#8211; \u0631\u0634\u062a\u0647 \u0627\u06cc \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f \u06a9\u0647 \u0646\u0634\u0627\u0646 \u062f\u0647\u0646\u062f\u0647 \u0646\u0627\u0645 \u06a9\u0644\u0627\u0633 \u0627\u0633\u062a.  \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0631\u0627\u06cc \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631 (\u06a9\u0647 \u062f\u0642\u06cc\u0642\u0627 \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u0645) \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f.<\/li>\n<li><code>innerHTML()<\/code>  &#8211; \u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0639\u0646\u0627\u0635\u0631 HTML \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u062f\u0631 \u06cc\u06a9\u062f\u06cc\u06af\u0631 \u062a\u0648\u062f\u0631\u062a\u0648 \u06a9\u0631\u062f\u060c \u062f\u0631 \u0635\u0648\u0631\u062a \u0648\u062c\u0648\u062f \u0639\u0646\u0627\u0635\u0631 \u062a\u0648 \u062f\u0631 \u062a\u0648\u060c \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a HTML \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.<\/li>\n<li><code>innerText()<\/code>  &#8211; \u062a\u0645\u0627\u0645 \u0645\u062a\u0646 \u062f\u0627\u062e\u0644 \u06cc\u06a9 \u0639\u0646\u0635\u0631 (\u0627\u0632 \u062c\u0645\u0644\u0647 \u0639\u0646\u0627\u0635\u0631 \u062a\u0648\u062f\u0631\u062a\u0648) \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.<\/li>\n<\/ul>\n<p>\u0647\u0645\u0686\u0646\u06cc\u0646 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0647 \u0622\u0646\u0647\u0627 \u06af\u0648\u0634 \u062f\u0647\u06cc\u0645\u060c \u0645\u0627\u0646\u0646\u062f: <code>onclick<\/code>\u060c <code>ondblclick<\/code>\u060c <code>onkeydown<\/code>\u060c <code>onkeypress<\/code>.  \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u062f\u0631 \u0645\u0648\u0631\u062f \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631\u06cc \u06a9\u0633\u0628 \u06a9\u0646\u06cc\u062f <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Learn\/JavaScript\/Building_blocks\/Events\">\u0627\u0633\u0646\u0627\u062f \u0631\u0633\u0645\u06cc<\/a>.<\/p>\n<h3 id=\"gettingelementsusinggetelementbyid\"><span class=\"ez-toc-section\" id=\"%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementbyid\"><\/span>\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>getElementById()<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0639\u0646\u0627\u0635\u0631 \u0631\u0627 \u062a\u0648\u0633\u0637 \u0622\u0646\u0647\u0627 \u0631\u0628\u0648\u062f\u0647 \u0628\u0627\u0634\u06cc\u062f <em>\u0634\u0646\u0627\u0633\u0647<\/em>\u060c \u0627\u0632 \u0637\u0631\u06cc\u0642 <code>getElementById()<\/code> \u0631\u0648\u0634:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"link-to-google\"<\/span>));\n<\/code><\/pre>\n<p>\u06a9\u0647 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">a<\/span> <span class=\"hljs-attr\">href<\/span>=<span class=\"hljs-string\">\"https:\/\/www.google.com\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"link-to-google\"<\/span>&gt;<\/span>Some random link<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">a<\/span>&gt;<\/span>\n<\/code><\/pre>\n<h3 id=\"gettingelementsusinggetelementsbytagname\"><span class=\"ez-toc-section\" id=\"%d8%af%d8%b1%db%8c%d8%a7%d9%81%d8%aa_%d8%b9%d9%86%d8%a7%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_getelementsbytagname\"><\/span>\u062f\u0631\u06cc\u0627\u0641\u062a \u0639\u0646\u0627\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>getElementsByTagName()<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u062f\u0631 \u0646\u0647\u0627\u06cc\u062a\u060c \u0645\u0627 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0639\u0646\u0627\u0635\u0631 \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0622\u0646\u0647\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u0645 <em>\u0628\u0631\u0686\u0633\u0628 \u0632\u062f\u0646<\/em>\u060c \u0627\u06af\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u0627 \u0634\u0646\u0627\u0633\u0647 \u0646\u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f.  \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u06cc \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 HTML \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f\u060c \u0632\u06cc\u0631\u0627 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u06cc\u0634 \u0627\u0632 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u06cc\u06a9 \u062a\u06af \u062f\u0627\u0631\u06cc\u062f.<\/p>\n<p>\u062d\u0627\u0644\u0627\u060c \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0647\u0645\u0647 \u0631\u0627 \u0628\u062f\u0633\u062a \u0622\u0648\u0631\u06cc\u0645 <code>&lt;li&gt;<\/code> \u0639\u0646\u0627\u0635\u0631\u060c \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0627 \u062c\u0633\u062a\u062c\u0648 <code>li<\/code> \u0628\u0631\u0686\u0633\u0628:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-built_in\">document<\/span>.getElementsByTagName(<span class=\"hljs-string\">\"li\"<\/span>));\n<\/code><\/pre>\n<p>\u06a9\u0647 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\">HTMLCollection(3) (li, li, li)\n    - 0: li\n    - 1: li\n    - 2: li\n<\/code><\/pre>\n<p>\u0645\u0642\u062f\u0627\u0631 \u0628\u0631\u06af\u0634\u062a\u06cc \u0647\u0645\u0627\u0646 \u0627\u0633\u062a <code>getElementsByClassName<\/code> &#8211; \u06cc\u06a9 <code>HTMLCollection<\/code>.<\/p>\n<p>\u0635\u0631\u0641 \u0646\u0638\u0631 \u0627\u0632 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc \u0628\u0647 \u062f\u0633\u062a \u0622\u0648\u0631\u062f\u0646 \u06cc\u06a9 \u0639\u0646\u0635\u0631 &#8211; \u0627\u06a9\u0646\u0648\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u06a9\u0644\u0627\u0633 \u0622\u0646 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u0645.<\/p>\n<h2 id=\"changinganelementsclassusingjavascript\"><span class=\"ez-toc-section\" id=\"%d8%aa%d8%ba%db%8c%db%8c%d8%b1_%da%a9%d9%84%d8%a7%d8%b3_%db%8c%da%a9_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa\"><\/span>\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"changingelementclasswithclassname\"><span class=\"ez-toc-section\" id=\"%d8%aa%d8%ba%db%8c%db%8c%d8%b1_%da%a9%d9%84%d8%a7%d8%b3_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%d9%86%d8%a7%d9%85_%da%a9%d9%84%d8%a7%d8%b3\"><\/span>\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 \u0628\u0627 <em>\u0646\u0627\u0645 \u06a9\u0644\u0627\u0633<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u06cc\u06a9 \u0633\u0627\u062e\u062a\u06af\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u0645 <code>index.html<\/code> page  \u062d\u0627\u0648\u06cc \u0628\u0631\u062e\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627  \u0628\u0647 \u06a9\u0627\u0631\u0628\u0631 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc\u200c\u062f\u0647\u06cc\u0645 \u0628\u06cc\u0646 \u00ab\u062d\u0627\u0644\u062a \u0631\u0648\u0632\u00bb \u0648 \u00ab\u062d\u0627\u0644\u062a \u0634\u0628\u00bb \u062c\u0627\u0628\u0647\u200c\u062c\u0627 \u0634\u0648\u062f\u060c \u06a9\u0647 \u067e\u0627\u0644\u062a \u0631\u0646\u06af \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc\u200c\u062f\u0647\u062f \u0631\u0648\u06cc \u0635\u0641\u062d\u0647 \u0648\u0628  \u0645\u0627 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0628\u0647 \u06cc\u06a9 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u0645 <code>script.js<\/code> \u0641\u0627\u06cc\u0644 \u0648\u0627\u0631\u062f \u0634\u062f\u0647 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627\u060c \u0628\u0631\u0627\u06cc \u06cc\u0627\u0641\u062a\u0646 \u0648 \u062a\u063a\u06cc\u06cc\u0631 \u0639\u0646\u0627\u0635\u0631\u060c \u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 a <code>style.css<\/code> \u0641\u0627\u06cc\u0644\u06cc \u06a9\u0647 \u062d\u0627\u0648\u06cc \u062a\u0645\u0627\u0645 \u06a9\u062f\u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u06cc\u0644 \u0645\u0627 \u0627\u0633\u062a.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 <code>index.html<\/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>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">title<\/span>&gt;<\/span>Day\/night mode<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">title<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">link<\/span> <span class=\"hljs-attr\">rel<\/span>=<span class=\"hljs-string\">\"stylesheet\"<\/span> <span class=\"hljs-attr\">href<\/span>=<span class=\"hljs-string\">\"style.css\"<\/span>\/&gt;<\/span>\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">head<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">body<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"page-body-day\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"page-body\"<\/span>&gt;<\/span>\n\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">h1<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"main-heading-day\"<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"main-heading\"<\/span>&gt;<\/span>Some heading<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">h1<\/span>&gt;<\/span>\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">p<\/span>&gt;<\/span>Dummy text, dummy text, dummy text<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>&gt;<\/span>Some more dummy text, more dummy text, more dummy text<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">p<\/span>&gt;<\/span>\n    \n\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">button<\/span> <span class=\"hljs-attr\">onclick<\/span>=<span class=\"hljs-string\">\"switchMode()\"<\/span>&gt;<\/span>Switch day\/night mode<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">button<\/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\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"script.js\"<\/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\">html<\/span>&gt;<\/span>\n<\/code><\/pre>\n<p>\u062a\u0645\u0627\u0645 \u0639\u0646\u0627\u0635\u0631\u06cc \u06a9\u0647 \u0628\u0627 \u06a9\u0644\u06cc\u06a9 \u06a9\u0627\u0631\u0628\u0631 \u0638\u0627\u0647\u0631 \u062e\u0648\u062f \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u062f\u0647\u0646\u062f \u0631\u0648\u06cc \u0631\u0627 <em>\u062d\u0627\u0644\u062a \u0631\u0648\u0632\/\u0634\u0628 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f<\/em> \u062f\u06a9\u0645\u0647 \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u062e\u0648\u062f \u0647\u0633\u062a\u0646\u062f <em>\u0634\u0646\u0627\u0633\u0647<\/em>s \u0648 \u067e\u06cc\u0634 \u0641\u0631\u0636 \u0628\u0647 \u0622\u0646\u0647\u0627 \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a <code>element-day<\/code> \u06a9\u0644\u0627\u0633 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628<\/p>\n<p>\u0647\u0631 \u06cc\u06a9 <code>element-day<\/code> \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u062f\u0627\u0631\u062f <code>element-night<\/code> \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u062f\u0631 <code>style.css<\/code> \u0641\u0627\u06cc\u0644:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-selector-class\">.page-body-day<\/span> {\n    <span class=\"hljs-attribute\">background-color<\/span>: white;\n    <span class=\"hljs-attribute\">color<\/span>: black;\n}\n\n<span class=\"hljs-selector-class\">.page-body-night<\/span> {\n    <span class=\"hljs-attribute\">background-color<\/span>: <span class=\"hljs-number\">#02182B<\/span>;\n    <span class=\"hljs-attribute\">color<\/span>: yellow;\n}\n\n<span class=\"hljs-selector-class\">.main-heading-day<\/span> {\n    <span class=\"hljs-attribute\">color<\/span>: black;\n}\n\n<span class=\"hljs-selector-class\">.main-heading-night<\/span> {\n    <span class=\"hljs-attribute\">color<\/span>: yellow;\n}\n<\/code><\/pre>\n<p>\u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u0627 \u062e\u0648\u0627\u0647\u06cc\u0645 \u0628\u0648\u062f <em>\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633<\/em> \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 \u0645\u0627\u060c \u0645\u0627 \u0646\u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 <em>\u062c\u0633\u062a\u062c\u0648 \u0628\u0631 \u0627\u0633\u0627\u0633 \u06a9\u0644\u0627\u0633<\/em>\u060c \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a\u060c \u0645\u0648\u0627\u0631\u062f \u0644\u0628\u0647 \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u0634\u062a.  \u0645\u0627 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u0686\u06cc\u0632\u06cc \u0627\u0632 \u0622\u0646 \u0631\u0627 \u062c\u0633\u062a\u062c\u0648 \u06a9\u0646\u06cc\u0645 <em>\u062f\u0631\u0633\u062a \u0634\u062f<\/em> \u0627\u0631\u0632\u0634\u060c \u06a9\u0647 \u0627\u0633\u062a <em>\u0634\u0646\u0627\u0633\u0647<\/em>\u060c \u0648 \u0633\u067e\u0633 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f <code>className<\/code> \u0627\u0632 \u0622\u0646 \u0639\u0646\u0635\u0631 &#8211; \u062a\u063a\u06cc\u06cc\u0631 \u0622\u0646 \u0628\u0647 \u06a9\u0644\u0627\u0633 \u0645\u0646\u0627\u0633\u0628 \u062f\u0631 process:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">switchMode<\/span>(<span class=\"hljs-params\"><\/span>)<\/span>{\n    \n    <span class=\"hljs-comment\">\/\/ Body switching<\/span>\n    <span class=\"hljs-keyword\">if<\/span>(<span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).className == <span class=\"hljs-string\">\"page-body-day\"<\/span>){\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).className = <span class=\"hljs-string\">\"page-body-night\"<\/span>;\n    }<span class=\"hljs-keyword\">else<\/span>{\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).className = <span class=\"hljs-string\">\"page-body-day\"<\/span>;\n    }\n\n    <span class=\"hljs-comment\">\/\/ Heading switching<\/span>\n    <span class=\"hljs-keyword\">if<\/span>(<span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).className == <span class=\"hljs-string\">\"main-heading-day\"<\/span>){\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).className = <span class=\"hljs-string\">\"main-heading-night\"<\/span>;\n    }<span class=\"hljs-keyword\">else<\/span>{\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).className = <span class=\"hljs-string\">\"main-heading-day\"<\/span>;\n    }\n\n}\n<\/code><\/pre>\n<p>\u0631\u0627 <code>className<\/code> \u0646\u0627\u0645 \u06a9\u0644\u0627\u0633 \u0622\u0646 \u0639\u0646\u0635\u0631 \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.  \u0627\u06af\u0631\u0686\u0647\u060c \u0627\u06af\u0631 \u0645\u0642\u062f\u0627\u0631 \u062c\u062f\u06cc\u062f\u06cc \u0628\u0647 \u0622\u0646 \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0647\u06cc\u0645 &#8211; \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0624\u062b\u0631 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0631\u0648\u0632 \u06a9\u0646\u06cc\u0645 <code>class<\/code> \u0648\u06cc\u0698\u06af\u06cc \u06cc\u06a9 \u0628\u0631\u0686\u0633\u0628  \u0627\u06af\u0631 \u0639\u0646\u0635\u0631 \u062f\u0627\u0631\u0627\u06cc \u06cc\u06a9 <code>element-day<\/code> \u06a9\u0644\u0627\u0633\u060c \u0645\u0627 \u0622\u0646 \u0631\u0627 \u0628\u0647 <code>element-night<\/code> \u0648 \u0628\u0627\u0644\u0639\u06a9\u0633.<\/p>\n<p>\u0647\u0646\u06af\u0627\u0645 \u062a\u0639\u0648\u06cc\u0636 \u0628\u062f\u0646 <code>color<\/code> \u0648\u06cc\u0698\u06af\u06cc \u062f\u0631 CSS\u060c \u0645\u0627 \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u062a\u0645\u0627\u0645 \u0639\u0646\u0627\u0635\u0631\u06cc \u0631\u0627 \u06a9\u0647 \u0641\u0627\u0642\u062f \u0622\u0646 \u0647\u0633\u062a\u0646\u062f \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u062f\u0647\u06cc\u0645 <code>color<\/code> \u0648\u06cc\u0698\u06af\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 (\u062f\u0631 \u0645\u0648\u0631\u062f \u0645\u0627 \u0627\u06cc\u0646 \u0648\u06cc\u0698\u06af\u06cc \u0645\u0627\u0633\u062a <code>&lt;p&gt;<\/code> \u0628\u0631\u0686\u0633\u0628 \u0647\u0627).  \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0627\u062a\u0641\u0627\u0642 \u0645\u06cc \u0627\u0641\u062a\u062f\u060c CSS \u0634\u0631\u0648\u0639 \u0628\u0647 \u062e\u0648\u0627\u0646\u062f\u0646 \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u062c\u062f\u06cc\u062f \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0631\u062f\u0647 \u0648 \u0633\u0628\u06a9 \u0647\u0627 \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0622\u0646 \u0627\u0639\u0645\u0627\u0644 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<p>\u0627\u06af\u0631\u0686\u0647\u060c \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u062e\u06cc\u0644\u06cc \u0645\u062f\u0631\u0646 \u0646\u06cc\u0633\u062a \u0648 \u0639\u0645\u062f\u062a\u0627\u064b \u0628\u0631\u0627\u06cc \u062a\u0637\u0628\u06cc\u0642 \u0639\u0645\u0644\u06a9\u0631\u062f\u0647\u0627\u06cc \u0639\u0642\u0628 \u0645\u0627\u0646\u062f\u0647 \u0627\u06cc\u0646\u062a\u0631\u0646\u062a \u0627\u06a9\u0633\u067e\u0644\u0648\u0631\u0631 8 \u0648 9 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<h3 id=\"changingelementclasswithclasslist\"><span class=\"ez-toc-section\" id=\"%d8%aa%d8%ba%db%8c%db%8c%d8%b1_%da%a9%d9%84%d8%a7%d8%b3_%d8%b9%d9%86%d8%b5%d8%b1_%d8%a8%d8%a7_%da%a9%d9%84%d8%a7%d8%b3_%d9%84%db%8c%d8%b3%d8%aa\"><\/span>\u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 \u0628\u0627 <em>\u06a9\u0644\u0627\u0633 \u0644\u06cc\u0633\u062a<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627\u06cc \u0627\u06cc\u0646\u062a\u0631\u0646\u062a\u06cc \u062c\u062f\u06cc\u062f\u062a\u0631 \u0627\u0632 \u0648\u06cc\u0698\u06af\u06cc \u062c\u062f\u06cc\u062f\u062a\u0631\u06cc \u0628\u0647 \u0646\u0627\u0645 \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0645\u06cc \u06a9\u0646\u0646\u062f <code>classList<\/code>.  \u0622\u0646\u0686\u0647 \u0627\u06cc\u0646 \u0648\u06cc\u0698\u06af\u06cc \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u062f\u0647\u062f \u0644\u06cc\u0633\u062a\u06cc \u0627\u0632 <em>\u0647\u0645\u0647 \u06a9\u0644\u0627\u0633 \u0647\u0627<\/em> \u06a9\u0647 \u0628\u0631 \u0631\u0648\u06cc \u06cc\u06a9 \u0639\u0646\u0635\u0631 HTML \u062e\u0627\u0635 \u0627\u0639\u0645\u0627\u0644 \u0645\u06cc \u0634\u0648\u0646\u062f.<\/p>\n<p><strong>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f:<\/strong> \u0627\u06cc\u0646\u062a\u0631\u0646\u062a \u0627\u06a9\u0633\u067e\u0644\u0648\u0631\u0631 8 \u0648 9 \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0646\u0645\u06cc \u06a9\u0646\u0646\u062f <code>classList<\/code>.<\/p>\n<p><code>classList<\/code>  \u0686\u0646\u062f \u0631\u0648\u0634 \u062f\u0627\u0631\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645:<\/p>\n<ul>\n<li><code>add(class_name)<\/code>  &#8211; \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u062c\u062f\u06cc\u062f \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u062f <code>class_name<\/code> \u0628\u0647 \u0644\u06cc\u0633\u062a<\/li>\n<li><code>remove(class_name)<\/code>  &#8211; \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0631\u0627 \u062d\u0630\u0641 \u0645\u06cc \u06a9\u0646\u062f <code>class_name<\/code> \u0627\u0632 \u0644\u06cc\u0633\u062a<\/li>\n<li><code>toggle(class_name)<\/code>  &#8211; \u06a9\u0644\u0627\u0633 \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u062f <code>class_name<\/code> \u0627\u06af\u0631 \u0642\u0628\u0644\u0627\u064b \u0627\u0636\u0627\u0641\u0647 \u0646\u0634\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u0622\u0646 \u0631\u0627 \u062d\u0630\u0641 \u0645\u06cc \u06a9\u0646\u062f.<\/li>\n<li><code>contains(class_name)<\/code>  &#8211; \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0622\u06cc\u0627 <code>class_name<\/code> \u062f\u0631 \u0644\u06cc\u0633\u062a \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u0627\u0639\u0645\u0627\u0644 \u0634\u062f\u0647 \u0628\u0631\u0627\u06cc \u0639\u0646\u0635\u0631 HTML \u0642\u0631\u0627\u0631 \u062f\u0627\u0631\u062f.<\/li>\n<\/ul>\n<p>\u06a9\u0647 \u06af\u0641\u062a\u0647 \u0634\u062f &#8211; \u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0627\u0632\u0646\u0648\u06cc\u0633\u06cc \u06a9\u0646\u06cc\u0645 <code>script.js<\/code> \u0641\u0627\u06cc\u0644 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0647\u0627 \u0628\u0647 \u062c\u0627\u06cc \u0622\u0646:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">switchMode<\/span>(<span class=\"hljs-params\"><\/span>)<\/span>{    \n    <span class=\"hljs-comment\">\/\/ Body switching<\/span>\n    <span class=\"hljs-keyword\">if<\/span>(<span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).classList.contains(<span class=\"hljs-string\">\"page-body-day\"<\/span>)){\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).classList.remove(<span class=\"hljs-string\">\"page-body-day\"<\/span>);\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).classList.add(<span class=\"hljs-string\">\"page-body-night\"<\/span>);\n    } <span class=\"hljs-keyword\">else<\/span>{\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).classList.remove(<span class=\"hljs-string\">\"page-body-night\"<\/span>);\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"page-body\"<\/span>).classList.add(<span class=\"hljs-string\">\"page-body-day\"<\/span>);\n    }\n\n    <span class=\"hljs-comment\">\/\/ Heading switching<\/span>\n    <span class=\"hljs-keyword\">if<\/span>(<span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).classList.contains(<span class=\"hljs-string\">\"main-heading-day\"<\/span>)){\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).classList.remove(<span class=\"hljs-string\">\"main-heading-day\"<\/span>);\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).classList.add(<span class=\"hljs-string\">\"main-heading-night\"<\/span>);\n    } <span class=\"hljs-keyword\">else<\/span>{\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).classList.remove(<span class=\"hljs-string\">\"main-heading-night\"<\/span>);\n        <span class=\"hljs-built_in\">document<\/span>.getElementById(<span class=\"hljs-string\">\"main-heading\"<\/span>).classList.add(<span class=\"hljs-string\">\"main-heading-day\"<\/span>);\n    }\n\n}\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u062f\u0631 HTML5 \u0648 \u062f\u0631 \u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627\u06cc \u0645\u062f\u0631\u0646 \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u0627\u0632 \u0627\u06cc\u0646 \u0637\u0631\u06cc\u0642 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u06a9\u0644\u0627\u0633\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0631\u0648\u0634\u06cc \u0645\u0634\u0627\u0628\u0647 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f. <em>\u062c\u06cc \u06a9\u0648\u0626\u0631\u06cc<\/em> &#8211; \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06a9\u0647 \u0628\u0647 \u0637\u0648\u0631 \u06af\u0633\u062a\u0631\u062f\u0647 \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u0639\u0646\u0627\u0635\u0631 HTML\u060c \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u0648 \u063a\u06cc\u0631\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p>\u0627\u0632 \u0637\u0631\u06cc\u0642 <code>classList<\/code>\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u06af\u0646\u062c\u0627\u0646\u062f\u0646 \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062e\u0627\u0631\u062c\u06cc \u06a9\u0647 \u06a9\u0627\u0647\u0634 \u0645\u06cc \u062f\u0647\u062f \u0635\u0631\u0641 \u0646\u0638\u0631 \u06a9\u0646\u06cc\u062f <em><strong>PLT<\/strong> (\u0632\u0645\u0627\u0646 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0635\u0641\u062d\u0647)<\/em> \u06a9\u0647 \u0627\u062e\u06cc\u0631\u0627\u064b \u0627\u0647\u0645\u06cc\u062a \u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a <em>\u0648\u0628 \u062d\u06cc\u0627\u062a\u06cc<\/em> \u0633\u06cc\u06af\u0646\u0627\u0644 \u0628\u0631\u0627\u06cc \u062f\u0631\u062c\u0647 \u0628\u0646\u062f\u06cc SEO<\/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>\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u062f\u0644\u06cc\u0644 \u0633\u0627\u062f\u0647 \u0628\u0648\u062f\u0646 DOM \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0627\u0633\u0627\u0633\u0627\u064b \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0631\u0627 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u06a9\u0646\u062f\u060c \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0642\u0628\u0627\u0644 \u06af\u0633\u062a\u0631\u062f\u0647 \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a \u0631\u0648\u06cc \u0648\u0628 \u0634\u0645\u0627 page\u060c \u0627\u0632 \u062c\u0645\u0644\u0647 \u0645\u0648\u0627\u0631\u062f \u062f\u06cc\u06af\u0631.<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0622\u0645\u0648\u0632\u0634 \u0646\u06af\u0627\u0647\u06cc \u0628\u0647 \u0622\u0646 \u0627\u0646\u062f\u0627\u062e\u062a\u06cc\u0645 <em>\u0631\u0648\u0634 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/em>.<\/p>\n<\/div>\n<p><br \/>\n<br \/>\u0645\u0646\u062a\u0634\u0631 \u0634\u062f\u0647 \u062f\u0631 1403-01-16 16:13:04<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;15754&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;\u0631\u0648\u0634 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0639\u0646\u0635\u0631 \u0628\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a - className \u0648 classList \u0648\u06cc\u0698\u06af\u06cc \u06a9\u0644\u0627\u0633 \u062f\u0631 HTML \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0644\u0627\u0633 \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u06cc\u0627 \u0686\u0646\u062f \u0639\u0646\u0635\u0631 HTML \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.  \u0628\u0647 \u0627\u06cc\u0646 \u062a\u0631\u062a\u06cc\u0628\u060c \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 \u062a\u0639\u0644\u0642 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f \u0648 \u0633\u0628\u06a9 \u06cc\u06a9\u0633\u0627\u0646\u06cc \u0631\u0627 \u062f\u0631 \u0634\u06cc\u0648\u0647 \u0646\u0627\u0645\u0647 \u0628\u0647 \u0627\u0634\u062a\u0631\u0627\u06a9 \u0628\u06af\u0630\u0627\u0631\u0646\u062f\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0646\u06cc\u0627\u0632\u06cc \u0628\u0647 \u0646\u0648\u0634\u062a\u0646 \u06cc\u06a9 \u0633\u0628\u06a9 \u0628\u0631\u0627\u06cc ...&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: 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