{"id":2803,"date":"2016-06-29T03:37:38","date_gmt":"2016-06-29T03:37:38","guid":{"rendered":"https:\/\/kiencang.net\/?p=2803"},"modified":"2016-06-29T03:37:38","modified_gmt":"2016-06-29T03:37:38","slug":"the-var-trong-html","status":"publish","type":"post","link":"https:\/\/kiencang.net\/the-var-trong-html\/","title":{"rendered":"Th\u1ebb var trong HTML"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<p>\u0110\u1ecbnh d\u1ea1ng v\u0103n b\u1ea3n trong t\u00e0i li\u1ec7u:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;var>Bi\u1ebfn&lt;\/var><\/code><\/pre>\n\n\n\n<p>K\u1ebft qu\u1ea3:<\/p>\n\n\n\n<var>Bi\u1ebfn<\/var>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d6aa255ea\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d6aa255ea\"  type=\"checkbox\" id=\"item-6577d6aa255ea\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/the-var-trong-html\/#Dinh_nghia_va_cach_dung\" title=\"\u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng\">\u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/the-var-trong-html\/#Trinh_duyet_ho_tro\" title=\"Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3\">Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/the-var-trong-html\/#Su_khac_biet_giua_HTML_401_va_HTML5\" title=\"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTML 4.01 v\u00e0 HTML5\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTML 4.01 v\u00e0 HTML5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/the-var-trong-html\/#Thiet_lap_CSS_mac_dinh\" title=\"Thi\u1ebft l\u1eadp CSS m\u1eb7c \u0111\u1ecbnh\">Thi\u1ebft l\u1eadp CSS m\u1eb7c \u0111\u1ecbnh<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dinh_nghia_va_cach_dung\"><\/span>\u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Th\u1ebb &lt;var&gt; l\u00e0 th\u1ebb c\u1ee5m t\u1eeb. N\u00f3 d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a m\u1ed9t bi\u1ebfn.<\/p>\n\n\n\n<p><strong>M\u1eb9o:<\/strong>&nbsp;B\u1ea1n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c hi\u1ec7u \u1ee9ng t\u1ed1t h\u01a1n nh\u1edd CSS<\/p>\n\n\n\n<p>T\u1ea5t c\u1ea3 c\u00e1c th\u1ebb c\u1ee5m t\u1eeb:<\/p>\n\n\n\n<figure id=\"table1\" class=\"wp-block-table w3-table-all notranslate\"><table><tbody><tr><th>Th\u1ebb<\/th><th>M\u00f4 t\u1ea3<\/th><\/tr><tr><td><a href=\"https:\/\/kiencang.net\/em-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;em><\/a><\/td><td>Xu\u1ea5t ra v\u0103n b\u1ea3n \u0111\u01b0\u1ee3c nh\u1ea5n m\u1ea1nh<\/td><\/tr><tr><td><a href=\"https:\/\/kiencang.net\/the-strong-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;strong><\/a><\/td><td>\u0110\u1ecbnh ngh\u0129a m\u1ed9t v\u0103n b\u1ea3n quan tr\u1ecdng<\/td><\/tr><tr><td><a href=\"https:\/\/kiencang.net\/the-code-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;code><\/a><\/td><td>\u0110\u1ecbnh ngh\u0129a m\u1ed9t \u0111o\u1ea1n code m\u00e1y t\u00ednh<\/td><\/tr><tr><td><a href=\"https:\/\/kiencang.net\/the-samp-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;samp><\/a><\/td><td>\u0110\u1ecbnh ngh\u0129a m\u1ed9t m\u1eabu \u0111\u1ea7u ra t\u1eeb ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y t\u00ednh<\/td><\/tr><tr><td><a href=\"https:\/\/kiencang.net\/the-kbd-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;kbd><\/a><\/td><td>\u0110\u1ecbnh ngh\u0129a m\u1ed9t \u0111\u1ea7u v\u00e0o nh\u1eadp t\u1eeb b\u00e0n ph\u00edm<\/td><\/tr><tr><td>&lt;var&gt;<\/td><td>\u0110\u1ecbnh ngh\u0129a m\u1ed9t bi\u1ebfn<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Trinh_duyet_ho_tro\"><\/span>Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table browserref notranslate\"><table><tbody><tr><th>Th\u1ebb<\/th><th>&nbsp;Chrome<\/th><th>&nbsp;IE<\/th><th>&nbsp;FireFox<\/th><th>&nbsp;Safari<\/th><th>&nbsp;Opera<\/th><\/tr><tr><td>&lt;var&gt;<\/td><td>C\u00f3<\/td><td>C\u00f3<\/td><td>C\u00f3<\/td><td>C\u00f3<\/td><td>C\u00f3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Su_khac_biet_giua_HTML_401_va_HTML5\"><\/span>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa HTML 4.01 v\u00e0 HTML5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>KH\u00d4NG.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Thiet_lap_CSS_mac_dinh\"><\/span>Thi\u1ebft l\u1eadp CSS m\u1eb7c \u0111\u1ecbnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>H\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t s\u1ebd hi\u1ec3n th\u1ecb ph\u1ea7n t\u1eed &lt;var> v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh sau:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var {\nfont-style: italic;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>V\u00ed d\u1ee5 \u0110\u1ecbnh d\u1ea1ng v\u0103n b\u1ea3n trong t\u00e0i li\u1ec7u: K\u1ebft qu\u1ea3: Bi\u1ebfn \u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng Th\u1ebb &lt;var&gt; l\u00e0 th\u1ebb c\u1ee5m t\u1eeb. N\u00f3 d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a m\u1ed9t bi\u1ebfn. M\u1eb9o:&nbsp;B\u1ea1n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c hi\u1ec7u \u1ee9ng t\u1ed1t h\u01a1n nh\u1edd CSS T\u1ea5t c\u1ea3 c\u00e1c th\u1ebb c\u1ee5m t\u1eeb: Th\u1ebb M\u00f4 t\u1ea3 &lt;em> Xu\u1ea5t ra v\u0103n b\u1ea3n &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[235],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Th\u1ebb var trong HTML &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/the-var-trong-html\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Th\u1ebb var trong HTML &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"V\u00ed d\u1ee5 \u0110\u1ecbnh d\u1ea1ng v\u0103n b\u1ea3n trong t\u00e0i li\u1ec7u: K\u1ebft qu\u1ea3: Bi\u1ebfn \u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng Th\u1ebb &lt;var&gt; l\u00e0 th\u1ebb c\u1ee5m t\u1eeb. N\u00f3 d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a m\u1ed9t bi\u1ebfn. M\u1eb9o:&nbsp;B\u1ea1n c\u00f3 th\u1ec3 c\u00f3 c\u00e1c hi\u1ec7u \u1ee9ng t\u1ed1t h\u01a1n nh\u1edd CSS T\u1ea5t c\u1ea3 c\u00e1c th\u1ebb c\u1ee5m t\u1eeb: Th\u1ebb M\u00f4 t\u1ea3 &lt;em&gt; Xu\u1ea5t ra v\u0103n b\u1ea3n &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/the-var-trong-html\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-06-29T03:37:38+00:00\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Th\u1ebb var trong HTML &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/the-var-trong-html\/","og_locale":"vi_VN","og_type":"article","og_title":"Th\u1ebb var trong HTML &#8226; Ki\u1ebfn c\u00e0ng","og_description":"V\u00ed d\u1ee5 \u0110\u1ecbnh d\u1ea1ng v\u0103n b\u1ea3n trong t\u00e0i li\u1ec7u: K\u1ebft qu\u1ea3: Bi\u1ebfn \u0110\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch d\u00f9ng Th\u1ebb &lt;var&gt; l\u00e0 th\u1ebb c\u1ee5m t\u1eeb. N\u00f3 d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a m\u1ed9t bi\u1ebfn. 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