{"id":11918,"date":"2019-02-23T05:18:27","date_gmt":"2019-02-23T05:18:27","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11918"},"modified":"2019-02-23T05:18:27","modified_gmt":"2019-02-23T05:18:27","slug":"goi-css-truoc-giup-tang-toc-do-website","status":"publish","type":"post","link":"https:\/\/kiencang.net\/goi-css-truoc-giup-tang-toc-do-website\/","title":{"rendered":"G\u1ecdi CSS tr\u01b0\u1edbc gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 website"},"content":{"rendered":"\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-6577d6c5ae3aa\" ><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-6577d6c5ae3aa\"  type=\"checkbox\" id=\"item-6577d6c5ae3aa\"><\/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\/goi-css-truoc-giup-tang-toc-do-website\/#Tai_sao_ban_can_phai_goi_CSS_truoc\" title=\"T\u1ea1i sao b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ecdi CSS tr\u01b0\u1edbc?\">T\u1ea1i sao b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ecdi CSS tr\u01b0\u1edbc?<\/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\/goi-css-truoc-giup-tang-toc-do-website\/#Ban_can_goi_CSS_truoc_JavaScript_hoac_bat_cu_thanh_phan_nao_khac\" title=\"B\u1ea1n c\u1ea7n g\u1ecdi CSS tr\u01b0\u1edbc JavaScript (ho\u1eb7c b\u1ea5t c\u1ee9 th\u00e0nh ph\u1ea7n n\u00e0o kh\u00e1c)\">B\u1ea1n c\u1ea7n g\u1ecdi CSS tr\u01b0\u1edbc JavaScript (ho\u1eb7c b\u1ea5t c\u1ee9 th\u00e0nh ph\u1ea7n n\u00e0o kh\u00e1c)<\/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\/goi-css-truoc-giup-tang-toc-do-website\/#Cac_loi_goi_request_mang\" title=\"C\u00e1c l\u1eddi g\u1ecdi (request) m\u1ea1ng\">C\u00e1c l\u1eddi g\u1ecdi (request) m\u1ea1ng<\/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\/goi-css-truoc-giup-tang-toc-do-website\/#Tai_sao_hoat_dong_cua_JavaScript_lai_gay_tri_hoan\" title=\"T\u1ea1i sao ho\u1ea1t \u0111\u1ed9ng c\u1ee7a JavaScript l\u1ea1i g\u00e2y tr\u00ec ho\u00e3n?\">T\u1ea1i sao ho\u1ea1t \u0111\u1ed9ng c\u1ee7a JavaScript l\u1ea1i g\u00e2y tr\u00ec ho\u00e3n?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tai_sao_ban_can_phai_goi_CSS_truoc\"><\/span>T\u1ea1i sao b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ecdi CSS tr\u01b0\u1edbc?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<ul><li>B\u1edfi v\u00ec t\u1ea5t c\u1ea3 CSS ph\u1ea3i \u0111\u01b0\u1ee3c tr\u00ecnh duy\u1ec7t x\u1eed l\u00fd tr\u01b0\u1edbc khi n\u00f3 c\u00f3 th\u1ec3 <a href=\"https:\/\/kiencang.net\/cach-trang-web-tai-va-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">hi\u1ec3n th\u1ecb b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec tr\u00ean m\u00e0n h\u00ecnh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/a>.<\/li><\/ul>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/css-chan-hien-thi.png\" alt=\"css ch\u1eb7n hi\u1ec3n th\u1ecb\" class=\"wp-image-11919\"\/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ban_can_goi_CSS_truoc_JavaScript_hoac_bat_cu_thanh_phan_nao_khac\"><\/span>B\u1ea1n c\u1ea7n g\u1ecdi CSS tr\u01b0\u1edbc JavaScript (ho\u1eb7c b\u1ea5t c\u1ee9 th\u00e0nh ph\u1ea7n n\u00e0o kh\u00e1c)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>M\u1ed9t v\u1ea5n \u0111\u1ec1 c\u01a1 b\u1ea3n g\u00e2y tr\u00ec ho\u00e3n CSS \u0111\u01a1n gi\u1ea3n l\u00e0 do trang web ph\u1ea3i g\u1ecdi t\u00e0i nguy\u00ean kh\u00e1c tr\u01b0\u1edbc khi n\u00f3 g\u1ecdi CSS.<\/p>\n\n\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn th\u1ee9 t\u1ef1 c\u00e1c t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c g\u1ecdi xu\u1ea5t hi\u1ec7n trong file HTML.<\/p>\n\n\n<p>Gi\u1ea3 s\u1eed ch\u00fang ta c\u00f3 trang web bao g\u1ed3m m\u1ed9t \u1ea3nh, m\u1ed9t file CSS, v\u00e0 m\u1ed9t file JavaScript nh\u01b0 h\u00ecnh b\u00ean d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/goi-css-truoc.png\" alt=\"g\u1ecdi css tr\u01b0\u1edbc\" class=\"wp-image-11920\"\/><\/figure><\/div>\n\n\n<p>H\u00ecnh tr\u00ean cho th\u1ea5y file CSS \u0111\u01b0\u1ee3c g\u1ecdi tr\u01b0\u1edbc v\u00ec v\u1ecb tr\u00ed c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u01b0\u1edbc (cao h\u01a1n tr\u00ean trang) so v\u1edbi file \u1ea3nh v\u00e0 file JavaScript.<\/p>\n\n\n<p>Trong th\u1ef1c t\u1ebf, trang c\u1ee7a b\u1ea1n c\u00f3 kh\u1ea3 n\u0103ng s\u1ebd g\u1ecdi m\u1ed9t v\u00e0i th\u1ee9 n\u1eefa, th\u1eadm ch\u00ed l\u00e0 c\u1ea3 t\u00e1 c\u00e1c t\u00e0i nguy\u00ean b\u00ean ngo\u00e0i.<\/p>\n\n\n<p>\u0110\u1ea3m b\u1ea3o g\u1ecdi file CSS tr\u01b0\u1edbc gi\u00fap tr\u00ecnh duy\u1ec7t c\u00f3 \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u n\u00e0y tr\u01b0\u1edbc ti\u00ean.<\/p>\n\n\n<p>\u0110i\u1ec1u n\u00e0y ti\u1ebft ki\u1ec7m th\u1eddi gian b\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ed1 l\u1ea7n g\u1ecdi m\u1ea1ng v\u00e0 kh\u00f4ng \u0111\u1ec3 <a href=\"https:\/\/kiencang.net\/javascript-chan-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">ho\u1ea1t \u0111\u1ed9ng JavaScript l\u00e0m tr\u00ecnh duy\u1ec7t ch\u1eadm tr\u1ec5<\/a> nh\u1eadn CSS.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_loi_goi_request_mang\"><\/span>C\u00e1c l\u1eddi g\u1ecdi (request) m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Nh\u01b0 v\u00ed d\u1ee5 \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a \u0111i r\u1ea5t nhi\u1ec1u \u1edf tr\u00ean, gi\u1ea3 d\u1ee5 m\u1ed7i l\u1eddi g\u1ecdi m\u1ea1ng (\u0111\u1ec3 l\u1ea5y m\u1ed7i file) t\u1ed1n m\u1ea5t m\u1ed9t gi\u00e2y.<\/p>\n\n\n<ul><li>N\u1ebfu ch\u00fang ta g\u1ecdi CSS tr\u01b0\u1edbc, tr\u00ecnh duy\u1ec7t s\u1ebd nh\u1eadn CSS trong v\u00f2ng m\u1ed9t gi\u00e2y;<\/li><li>N\u1ebfu ch\u00fang ta g\u1ecdi JavaScript tr\u01b0\u1edbc, tr\u00ecnh duy\u1ec7t s\u1ebd nh\u1eadn CSS trong v\u00f2ng hai gi\u00e2y (m\u1ed9t gi\u00e2y \u0111\u1ec3 l\u1ea5y JavaScript + m\u1ed9t gi\u00e2y \u0111\u1ec3 l\u1ea5y CSS);<\/li><li>N\u1ebfu ch\u00fang ta g\u1ecdi JavaScript v\u00e0 h\u00ecnh \u1ea3nh tr\u01b0\u1edbc CSS, th\u00ec tr\u00ecnh duy\u1ec7t s\u1ebd ch\u1ec9 nh\u1eadn \u0111\u01b0\u1ee3c CSS v\u00e0o gi\u00e2y th\u1ee9 ba.<\/li><\/ul>\n\n\n<p>Chuy\u1ec7n n\u00e0y x\u1ea3y ra l\u00e0 b\u1edfi v\u00ec <strong>tr\u00ecnh duy\u1ec7t kh\u00f4ng th\u1ec3 hi\u1ec3n th\u1ecb b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec cho \u0111\u1ebfn khi n\u00f3 c\u00f3 \u0111\u01b0\u1ee3c CSS<\/strong>.<\/p>\n\n\n<p>Trong th\u00ed d\u1ee5 c\u1ee7a ch\u00fang ta \u1edf tr\u00ean (v\u00e2ng, t\u00f4i bi\u1ebft n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3n h\u00f3a qu\u00e1 m\u1ee9c), v\u1edbi c\u00f9ng ngu\u1ed3n t\u00e0i nguy\u00ean nh\u01b0ng c\u00f3 c\u00e1i s\u1ebd t\u1ea3i trong v\u00f2ng m\u1ed9t gi\u00e2y, c\u00f3 c\u00e1i trong v\u00f2ng hai gi\u00e2y, c\u00e1i ch\u1eadm nh\u1ea5t l\u00e0 ba gi\u00e2y. \u0110\u01a1n gi\u1ea3n ta ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i <strong>th\u1ee9 t\u1ef1<\/strong> c\u1ee7a nh\u1eefng th\u1ee9 \u0111\u01b0\u1ee3c g\u1ecdi.<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/css-thu-tu-thoi-gian.png\" alt=\"css th\u1ee9 t\u1ef1 v\u00e0 th\u1eddi gian t\u1ea3i trang\" class=\"wp-image-11921\"\/><\/figure><\/div>\n\n\n<p>M\u1ed7i th\u1ee9 m\u00e0 trang t\u1ea3i \u0111\u1ec1u c\u1ea7n t\u1ed1n m\u1ed9t kho\u1ea3ng th\u1eddi gian n\u00e0o \u0111\u00f3. \u0110\u1ec3 tr\u00ecnh duy\u1ec7t t\u1ea3i \u0111\u01b0\u1ee3c CSS tr\u01b0\u1edbc ti\u00ean, ch\u00fang ta ph\u1ea3i lo\u1ea1i b\u1ecf b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec t\u1ea3i tr\u01b0\u1edbc n\u00f3. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n l\u00e0 ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i th\u1ee9 t\u1ef1 nh\u1eefng t\u00e0i nguy\u00ean m\u00e0 b\u1ea1n g\u1ecdi trong HTML.<\/p>\n\n\n<p>M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n tr\u00ecnh duy\u1ec7t c\u00f3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 c\u1ed1 g\u1eafng gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 c\u01a1 b\u1ea3n n\u00e0y, th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1eabn \u0111\u01a1n gi\u1ea3n l\u00e0 <strong>\u0111\u1ec3 CSS \u0111\u01b0\u1ee3c g\u1ecdi tr\u01b0\u1edbc ti\u00ean<\/strong>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tai_sao_hoat_dong_cua_JavaScript_lai_gay_tri_hoan\"><\/span>T\u1ea1i sao ho\u1ea1t \u0111\u1ed9ng c\u1ee7a JavaScript l\u1ea1i g\u00e2y tr\u00ec ho\u00e3n?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>B\u1ea1n h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng th\u1ebf n\u00e0y, n\u1ebfu tr\u00ecnh duy\u1ec7t ph\u1ea3i t\u1ea3i file JavaScript tr\u01b0\u1edbc CSS, \u0111i\u1ec1u \u0111\u00f3 ch\u1eafc ch\u1eafn g\u00e2y t\u1ed1n th\u1eddi gian t\u1ea3i nh\u01b0ng \u0111\u00f3 ch\u01b0a h\u1eb3n \u0111\u00e3 l\u00e0 \u0111i\u1ec1u t\u1ec7 h\u1ea1i nh\u1ea5t \u0111\u00e2u.<\/p>\n\n\n<p>V\u00ed d\u1ee5 khi ch\u00fang ta g\u1ecdi m\u1ed9t file JavaScript tr\u01b0\u1edbc file CSS v\u00e0 JavaScript n\u00f3i r\u1eb1ng &#8220;\u0111\u1ee3i m\u1ed9t gi\u00e2y \u0111\u00e3&#8221; ho\u1eb7c file JavaScript \u0111\u00f3 l\u1ea1i \u0111i g\u1ecdi th\u00eam m\u1ed9t file JavaScript kh\u00e1c n\u1eefa!<\/p>\n\n\n<p>Nh\u1eefng ho\u1ea1t \u0111\u1ed9ng n\u00e0y c\u1ee7a JavaScript s\u1ebd ch\u1ec9 l\u00e0m tr\u00ecnh duy\u1ec7t b\u1ecb tr\u00ec ho\u00e3n th\u00eam m\u00e0 th\u00f4i, ng\u0103n kh\u00f4ng cho n\u00f3 nh\u1eadn CSS, <a href=\"https:\/\/kiencang.net\/cach-trang-web-tai-va-hien-thi\/\">c\u00e1i tr\u00ecnh duy\u1ec7t c\u1ea7n \u0111\u1ec3 hi\u1ec3n th\u1ecb trang<\/a>.<\/p>\n\n\n<p>V\u00ec nh\u1eefng l\u00fd do n\u00e0y, ch\u00fang ta ph\u1ea3i lu\u00f4n lu\u00f4n nh\u1eafc b\u1ea3n th\u00e2n m\u00ecnh h\u00e3y g\u1ecdi CSS tr\u01b0\u1edbc khi g\u1ecdi b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec kh\u00e1c.<\/p>\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft: Why should CSS be called first? \u2013 T\u00e1c gi\u1ea3: Patrick Sexton \u2013 Website: Varvy)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea1i sao b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ecdi CSS tr\u01b0\u1edbc? B\u1edfi v\u00ec t\u1ea5t c\u1ea3 CSS ph\u1ea3i \u0111\u01b0\u1ee3c tr\u00ecnh duy\u1ec7t x\u1eed l\u00fd tr\u01b0\u1edbc khi n\u00f3 c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec tr\u00ean m\u00e0n h\u00ecnh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. B\u1ea1n c\u1ea7n g\u1ecdi CSS tr\u01b0\u1edbc JavaScript (ho\u1eb7c b\u1ea5t c\u1ee9 th\u00e0nh ph\u1ea7n n\u00e0o kh\u00e1c) M\u1ed9t v\u1ea5n \u0111\u1ec1 c\u01a1 b\u1ea3n g\u00e2y &hellip;<\/p>\n","protected":false},"author":1,"featured_media":20443,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[262],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>G\u1ecdi CSS tr\u01b0\u1edbc gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 website &#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\/goi-css-truoc-giup-tang-toc-do-website\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"G\u1ecdi CSS tr\u01b0\u1edbc gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 website &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"T\u1ea1i sao b\u1ea1n c\u1ea7n ph\u1ea3i g\u1ecdi CSS tr\u01b0\u1edbc? 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