{"id":22771,"date":"2025-11-08T08:50:01","date_gmt":"2025-11-08T01:50:01","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=22771"},"modified":"2026-01-08T12:53:23","modified_gmt":"2026-01-08T05:53:23","slug":"html-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/html-la-gi\/","title":{"rendered":"HTML L\u00e0 G\u00ec? C\u1ea5u Tr\u00fac, Vai Tr\u00f2 &#038; C\u00e1ch Ho\u1ea1t \u0110\u1ed9ng Chi Ti\u1ebft T\u1eeb A-Z"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#HTML-la-gi\" >HTML l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#HTML-co-phai-la-ngon-ngu-lap-trinh-khong\" >HTML c\u00f3 ph\u1ea3i l\u00e0 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Lich-su-hinh-thanh-va-phat-trien-cua-HTML\" >L\u1ecbch s\u1eed h\u00ecnh th\u00e0nh v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a HTML<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cau-truc-va-Cach-hoat-dong-cua-HTML\" >C\u1ea5u tr\u00fac v\u00e0 C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a HTML<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Co-che-hoat-dong-tren-trinh-duyet\" >C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng tr\u00ean tr\u00ecnh duy\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cau-truc-mot-phan-tu-Element\" >C\u1ea5u tr\u00fac m\u1ed9t ph\u1ea7n t\u1eed (Element)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Thuoc-tinh-Attributes\" >Thu\u1ed9c t\u00ednh (Attributes)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cau-truc-cay-DOM-Document-Object-Model\" >C\u1ea5u tr\u00fac c\u00e2y DOM (Document Object Model)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cau-truc-tieu-chuan-cua-mot-file-HTML\" >C\u1ea5u tr\u00fac ti\u00eau chu\u1ea9n c\u1ee7a m\u1ed9t file HTML<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Xay-dung-Website-Toc-do-cao-cung-InterData\" >X\u00e2y d\u1ef1ng Website T\u1ed1c \u0111\u1ed9 cao c\u00f9ng InterData<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Moi-quan-he-giua-HTML-CSS-va-JavaScript\" >M\u1ed1i quan h\u1ec7 gi\u1eefa HTML, CSS v\u00e0 JavaScript<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cac-the-HTML-thong-dung-nhat-HTML-Tags\" >C\u00e1c th\u1ebb HTML th\u00f4ng d\u1ee5ng nh\u1ea5t (HTML Tags)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#1-The-van-ban\" >1. Th\u1ebb v\u0103n b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#2-The-lien-ket-va-da-phuong-tien\" >2. Th\u1ebb li\u00ean k\u1ebft v\u00e0 \u0111a ph\u01b0\u01a1ng ti\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#3-The-danh-sach\" >3. Th\u1ebb danh s\u00e1ch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#4-The-khoi-va-noi-dong-Block-Inline\" >4. Th\u1ebb kh\u1ed1i v\u00e0 n\u1ed9i d\u00f2ng (Block &amp; Inline)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Uu-diem-va-Nhuoc-diem-cua-HTML\" >\u01afu \u0111i\u1ec3m v\u00e0 Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a HTML<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Uu-diem\" >\u01afu \u0111i\u1ec3m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Nhuoc-diem\" >Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#HTML5-la-gi-Su-cai-tien-vuot-bac\" >HTML5 l\u00e0 g\u00ec? S\u1ef1 c\u1ea3i ti\u1ebfn v\u01b0\u1ee3t b\u1eadc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cac-cong-cu-soan-thao-HTML-pho-bien\" >C\u00e1c c\u00f4ng c\u1ee5 so\u1ea1n th\u1ea3o HTML ph\u1ed5 bi\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Cau-hoi-thuong-gap-ve-HTML-FAQs\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 HTML (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Hoc-HTML-mat-bao-lau\" >H\u1ecdc HTML m\u1ea5t bao l\u00e2u?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Co-can-gioi-toan-de-hoc-HTML-khong\" >C\u00f3 c\u1ea7n gi\u1ecfi to\u00e1n \u0111\u1ec3 h\u1ecdc HTML kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#File-HTML-co-duoi-mo-rong-la-gi\" >File HTML c\u00f3 \u0111u\u00f4i m\u1edf r\u1ed9ng l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Toi-co-the-viet-HTML-tren-dien-thoai-khong\" >T\u00f4i c\u00f3 th\u1ec3 vi\u1ebft HTML tr\u00ean \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/#Tong-ket\" >T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi \u0111i\u1ec1u g\u00ec t\u1ea1o n\u00ean c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t trang web? Khi b\u1ea1n truy c\u1eadp Facebook, Google hay \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, tr\u00ecnh duy\u1ec7t \u0111ang hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 c\u1ee7a m\u1ed9t ng\u00f4n ng\u1eef n\u1ec1n t\u1ea3ng.<\/p>\n<p>Ng\u00f4n ng\u1eef \u0111\u00f3 ch\u00ednh l\u00e0 HTML. \u0110\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 x\u00e2y d\u1ef1ng n\u00ean m\u1ea1ng l\u01b0\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/mang-internet\/\">Internet<\/a> m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.<\/p>\n<p>HTML \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ed9 khung x\u01b0\u01a1ng v\u1eefng ch\u1eafc cho m\u1ecdi <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a>. N\u1ebfu thi\u1ebfu HTML, website s\u1ebd kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i ho\u1eb7c hi\u1ec3n th\u1ecb n\u1ed9i dung. Vi\u1ec7c hi\u1ec3u r\u00f5 HTML l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai mu\u1ed1n b\u01b0\u1edbc ch\u00e2n v\u00e0o l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 th\u00f4ng tin, Marketing Online hay qu\u1ea3n tr\u1ecb website.<\/p>\n<p>B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p ki\u1ebfn th\u1ee9c to\u00e0n di\u1ec7n t\u1eeb kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n \u0111\u1ebfn c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng chuy\u00ean s\u00e2u c\u1ee7a HTML.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"HTML-la-gi\"><\/span>HTML l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/html-la-gi\/\"><strong>HTML<\/strong><\/a> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb ti\u1ebfng Anh <strong>Hypertext Markup Language<\/strong>. D\u1ecbch sang ti\u1ebfng Vi\u1ec7t, c\u1ee5m t\u1eeb n\u00e0y c\u00f3 ngh\u0129a l\u00e0 &#8220;Ng\u00f4n ng\u1eef \u0111\u00e1nh d\u1ea5u si\u00eau v\u0103n b\u1ea3n&#8221;.<\/p>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t, ch\u00fang ta c\u1ea7n ph\u00e2n t\u00edch hai th\u00e0nh ph\u1ea7n ch\u00ednh trong t\u00ean g\u1ecdi n\u00e0y:<\/p>\n<ul>\n<li><strong>Hypertext (Si\u00eau v\u0103n b\u1ea3n):<\/strong> Thu\u1eadt ng\u1eef n\u00e0y ch\u1ec9 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c li\u00ean k\u1ebft t\u00e0i li\u1ec7u. M\u1ed9t trang web kh\u00f4ng \u0111\u1ee9ng \u0111\u1ed9c l\u1eadp. Trang web ch\u1ee9a c\u00e1c li\u00ean k\u1ebft d\u1eabn \u0111\u1ebfn trang kh\u00e1c ho\u1eb7c d\u1eabn \u0111\u1ebfn m\u1ed9t ph\u1ea7n kh\u00e1c trong c\u00f9ng trang. C\u01a1 ch\u1ebf n\u00e0y t\u1ea1o n\u00ean m\u1ea1ng l\u01b0\u1edbi th\u00f4ng tin kh\u1ed5ng l\u1ed3.<\/li>\n<li><strong>Markup Language (Ng\u00f4n ng\u1eef \u0111\u00e1nh d\u1ea5u):<\/strong> HTML s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u \u0111\u1eb7c bi\u1ec7t g\u1ecdi l\u00e0 th\u1ebb (tags). C\u00e1c th\u1ebb n\u00e0y \u0111\u00e1nh d\u1ea5u \u0111o\u1ea1n v\u0103n b\u1ea3n \u0111\u1ec3 tr\u00ecnh duy\u1ec7t hi\u1ec3u c\u00e1ch hi\u1ec3n th\u1ecb. V\u00ed d\u1ee5, th\u1ebb in \u0111\u1eadm s\u1ebd b\u00e1o cho tr\u00ecnh duy\u1ec7t bi\u1ebft c\u1ea7n l\u00e0m n\u1ed5i b\u1eadt \u0111o\u1ea1n ch\u1eef \u0111\u00f3.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37746\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-1.jpg\" alt=\"HTML\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-1.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-1-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"HTML-co-phai-la-ngon-ngu-lap-trinh-khong\"><\/span>HTML c\u00f3 ph\u1ea3i l\u00e0 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t s\u1ef1 nh\u1ea7m l\u1eabn v\u00f4 c\u00f9ng ph\u1ed5 bi\u1ebfn. C\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c l\u00e0 <strong>kh\u00f4ng<\/strong>. HTML kh\u00f4ng ph\u1ea3i l\u00e0 ng\u00f4n ng\u1eef <a href=\"https:\/\/interdata.vn\/blog\/lap-trinh-la-gi\/\">l\u1eadp tr\u00ecnh<\/a> (Programming Language).<\/p>\n<p>Ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh c\u1ea7n c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c t\u00ednh to\u00e1n logic. Ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh x\u1eed l\u00fd c\u00e1c \u0111i\u1ec1u ki\u1ec7n nh\u01b0 &#8220;N\u1ebfu A th\u00ec l\u00e0m B&#8221; (If\/Else), <a href=\"https:\/\/interdata.vn\/blog\/vong-lap-la-gi\/\">v\u00f2ng l\u1eb7p<\/a> (Loops) hay khai b\u00e1o bi\u1ebfn \u0111\u1ec3 l\u01b0u tr\u1eef gi\u00e1 tr\u1ecb thay \u0111\u1ed5i.<\/p>\n<p>HTML kh\u00f4ng th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c ch\u1ee9c n\u0103ng logic \u0111\u00f3. HTML ch\u1ec9 \u0111\u00f3ng vai tr\u00f2 quy \u0111\u1ecbnh c\u1ea5u tr\u00fac v\u00e0 b\u1ed1 c\u1ee5c hi\u1ec3n th\u1ecb c\u1ee7a n\u1ed9i dung. B\u1ea1n d\u00f9ng HTML \u0111\u1ec3 n\u00f3i v\u1edbi tr\u00ecnh duy\u1ec7t: &#8220;\u0110\u00e2y l\u00e0 ti\u00eau \u0111\u1ec1&#8221;, &#8220;\u0110\u00e2y l\u00e0 h\u00ecnh \u1ea3nh&#8221;, ho\u1eb7c &#8220;\u0110\u00e2y l\u00e0 \u0111o\u1ea1n v\u0103n&#8221;. HTML kh\u00f4ng th\u1ec3 t\u00ednh to\u00e1n 1 + 1 b\u1eb1ng 2.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lich-su-hinh-thanh-va-phat-trien-cua-HTML\"><\/span>L\u1ecbch s\u1eed h\u00ecnh th\u00e0nh v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a HTML<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>HTML kh\u00f4ng xu\u1ea5t hi\u1ec7n ng\u1eabu nhi\u00ean m\u00e0 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a m\u1ed9t qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u khoa h\u1ecdc d\u00e0i h\u1ea1n. Ng\u01b0\u1eddi cha \u0111\u1ebb c\u1ee7a HTML l\u00e0 <strong>Tim Berners-Lee<\/strong>, m\u1ed9t nh\u00e0 v\u1eadt l\u00fd h\u1ecdc l\u00e0m vi\u1ec7c t\u1ea1i trung t\u00e2m nghi\u00ean c\u1ee9u CERN.<\/p>\n<p>N\u0103m 1990, Tim Berners-Lee t\u1ea1o ra phi\u00ean b\u1ea3n s\u01a1 khai c\u1ee7a HTML. M\u1ee5c \u0111\u00edch ban \u0111\u1ea7u r\u1ea5t \u0111\u01a1n gi\u1ea3n: gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc chia s\u1ebb t\u00e0i li\u1ec7u nghi\u00ean c\u1ee9u d\u1ec5 d\u00e0ng h\u01a1n th\u00f4ng qua m\u00f4i tr\u01b0\u1eddng m\u1ea1ng.<\/p>\n<p>Tr\u1ea3i qua nhi\u1ec1u th\u1eadp k\u1ef7, HTML \u0111\u00e3 c\u00f3 nhi\u1ec1u phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p:<\/p>\n<ul>\n<li><strong>HTML 1.0:<\/strong> Phi\u00ean b\u1ea3n \u0111\u1ea7u ti\u00ean v\u1edbi c\u00e1c t\u00ednh n\u0103ng r\u1ea5t h\u1ea1n ch\u1ebf, ch\u1ee7 y\u1ebfu l\u00e0 v\u0103n b\u1ea3n \u0111\u01a1n thu\u1ea7n.<\/li>\n<li><strong>HTML 4.01:<\/strong> Ra m\u1eaft n\u0103m 1999, \u0111\u00e1nh d\u1ea5u s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i c\u1ee7a Internet.<\/li>\n<li><strong>XHTML:<\/strong> M\u1ed9t giai \u0111o\u1ea1n chuy\u1ec3n giao v\u1edbi c\u00e1c quy t\u1eafc vi\u1ebft m\u00e3 kh\u1eaft khe h\u01a1n.<\/li>\n<li><strong>HTML5:<\/strong> Phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n hi\u1ec7n t\u1ea1i. HTML5 mang l\u1ea1i kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 \u0111a ph\u01b0\u01a1ng ti\u1ec7n (video, \u00e2m thanh) m\u1ea1nh m\u1ebd v\u00e0 t\u1ed1i \u01b0u h\u00f3a cho thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/li>\n<\/ul>\n<p>Hi\u1ec7n nay, t\u1ed5 ch\u1ee9c <strong><a href=\"https:\/\/interdata.vn\/blog\/w3c-la-gi\/\">W3C<\/a> (<a href=\"https:\/\/interdata.vn\/blog\/world-wide-web\/\">World Wide Web<\/a> Consortium)<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m duy tr\u00ec v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c ti\u00eau chu\u1ea9n cho HTML. W3C \u0111\u1ea3m b\u1ea3o r\u1eb1ng HTML ho\u1ea1t \u0111\u1ed9ng th\u1ed1ng nh\u1ea5t tr\u00ean m\u1ecdi tr\u00ecnh duy\u1ec7t, t\u1eeb Chrome, Firefox \u0111\u1ebfn Safari.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-truc-va-Cach-hoat-dong-cua-HTML\"><\/span>C\u1ea5u tr\u00fac v\u00e0 C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a HTML<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 l\u00e0m ch\u1ee7 HTML, b\u1ea1n c\u1ea7n hi\u1ec3u c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng \u0111\u1eb1ng sau nh\u1eefng d\u00f2ng m\u00e3.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37747\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-2.jpg\" alt=\"HTML\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-2.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-2-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Co-che-hoat-dong-tren-trinh-duyet\"><\/span>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng tr\u00ean tr\u00ecnh duy\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c tr\u00ecnh duy\u1ec7t web (Browser) \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ed9 m\u00e1y d\u1ecbch thu\u1eadt. Khi b\u1ea1n truy c\u1eadp m\u1ed9t \u0111\u1ecba ch\u1ec9 web, tr\u00ecnh duy\u1ec7t s\u1ebd t\u1ea3i file HTML t\u1eeb <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> (Server) v\u1ec1 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n.<\/p>\n<p>Tr\u00ecnh duy\u1ec7t \u0111\u1ecdc file HTML t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi. D\u1ef1a v\u00e0o c\u00e1c th\u1ebb \u0111\u00e1nh d\u1ea5u, tr\u00ecnh duy\u1ec7t s\u1ebd &#8220;v\u1ebd&#8221; (render) n\u1ed9i dung l\u00ean m\u00e0n h\u00ecnh. Ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng s\u1ebd nh\u00ecn th\u1ea5y giao di\u1ec7n \u0111\u1ed3 h\u1ecda \u0111\u1eb9p m\u1eaft, trong khi tr\u00ecnh duy\u1ec7t th\u1ef1c ch\u1ea5t \u0111ang x\u1eed l\u00fd c\u00e1c d\u00f2ng m\u00e3 v\u0103n b\u1ea3n th\u00f4.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cau-truc-mot-phan-tu-Element\"><\/span>C\u1ea5u tr\u00fac m\u1ed9t ph\u1ea7n t\u1eed (Element)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t ph\u1ea7n t\u1eed HTML \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m ba th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<ol>\n<li><strong>Th\u1ebb m\u1edf (Opening tag):<\/strong> B\u1eaft \u0111\u1ea7u b\u1eb1ng d\u1ea5u nh\u1ecf h\u01a1n, t\u00ean th\u1ebb v\u00e0 d\u1ea5u l\u1edbn h\u01a1n. V\u00ed d\u1ee5: <code>&lt;p&gt;<\/code>.<\/li>\n<li><strong>N\u1ed9i dung (Content):<\/strong> Th\u00f4ng tin b\u1ea1n mu\u1ed1n hi\u1ec3n th\u1ecb (v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh).<\/li>\n<li><strong>Th\u1ebb \u0111\u00f3ng (Closing tag):<\/strong> T\u01b0\u01a1ng t\u1ef1 th\u1ebb m\u1edf nh\u01b0ng c\u00f3 th\u00eam d\u1ea5u g\u1ea1ch ch\u00e9o. V\u00ed d\u1ee5: <code>&lt;\/p&gt;<\/code>.<\/li>\n<\/ol>\n<p>V\u00ed d\u1ee5 minh h\u1ecda m\u1ed9t \u0111o\u1ea1n v\u0103n b\u1ea3n:<\/p>\n<pre><code>&lt;p&gt;\u0110\u00e2y l\u00e0 m\u1ed9t \u0111o\u1ea1n v\u0103n b\u1ea3n trong HTML.&lt;\/p&gt;<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Thuoc-tinh-Attributes\"><\/span>Thu\u1ed9c t\u00ednh (Attributes)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c th\u1ebb HTML th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi thu\u1ed9c t\u00ednh \u0111\u1ec3 cung c\u1ea5p th\u00eam th\u00f4ng tin. Thu\u1ed9c t\u00ednh lu\u00f4n n\u1eb1m trong th\u1ebb m\u1edf. C\u1ea5u tr\u00fac th\u01b0\u1eddng g\u1eb7p l\u00e0 <code>t\u00ean=\"gi\u00e1 tr\u1ecb\"<\/code>.<\/p>\n<p>V\u00ed d\u1ee5, \u0111\u1ec3 t\u1ea1o m\u1ed9t li\u00ean k\u1ebft, ch\u00fang ta d\u00f9ng th\u1ebb <code>&lt;a&gt;<\/code> v\u1edbi thu\u1ed9c t\u00ednh <code>href<\/code>:<\/p>\n<pre><code>&lt;a href=\"<a href=\"https:\/\/interdata.vn\/blog\/giao-thuc-https-la-gi\/\">https<\/a>:\/\/interdata.vn\"&gt;Truy c\u1eadp InterData&lt;\/a&gt;<\/code><\/pre>\n<p>Trong \u0111\u00f3, <code>href<\/code> l\u00e0 thu\u1ed9c t\u00ednh ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 \u0111\u00edch \u0111\u1ebfn c\u1ee7a li\u00ean k\u1ebft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cau-truc-cay-DOM-Document-Object-Model\"><\/span>C\u1ea5u tr\u00fac c\u00e2y DOM (Document Object Model)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>HTML t\u1ed5 ch\u1ee9c c\u00e1c th\u1ebb theo c\u1ea5u tr\u00fac l\u1ed3ng nhau, g\u1ecdi l\u00e0 m\u00f4 h\u00ecnh c\u00e2y DOM. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t c\u00e1i c\u00e2y c\u00f3 g\u1ed1c, c\u00e0nh v\u00e0 l\u00e1.<\/p>\n<ul>\n<li>Th\u1ebb <code>&lt;html&gt;<\/code> l\u00e0 g\u1ed1c.<\/li>\n<li>Th\u1ebb <code>&lt;body&gt;<\/code> l\u00e0 m\u1ed9t nh\u00e1nh l\u1edbn.<\/li>\n<li>C\u00e1c th\u1ebb nh\u01b0 <code>&lt;h1&gt;<\/code>, <code>&lt;p&gt;<\/code> b\u00ean trong l\u00e0 c\u00e1c nh\u00e1nh nh\u1ecf ho\u1eb7c l\u00e1.<\/li>\n<\/ul>\n<p>M\u1ed1i quan h\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 quan h\u1ec7 cha-con (Parent-Child). Th\u1ebb n\u1eb1m b\u00ean ngo\u00e0i l\u00e0 cha, th\u1ebb n\u1eb1m b\u00ean trong l\u00e0 con. Vi\u1ec7c hi\u1ec3u r\u00f5 DOM gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean d\u1ec5 d\u00e0ng thao t\u00e1c v\u00e0 ch\u1ec9nh s\u1eeda c\u00e1c ph\u1ea7n t\u1eed tr\u00ean trang.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-truc-tieu-chuan-cua-mot-file-HTML\"><\/span>C\u1ea5u tr\u00fac ti\u00eau chu\u1ea9n c\u1ee7a m\u1ed9t file HTML<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed9t t\u1eadp tin HTML chu\u1ea9n b\u1eaft bu\u1ed9c ph\u1ea3i tu\u00e2n theo m\u1ed9t b\u1ed9 khung quy \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00ecnh duy\u1ec7t nh\u1eadn di\u1ec7n v\u00e0 x\u1eed l\u00fd th\u00f4ng tin ch\u00ednh x\u00e1c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 v\u00ed d\u1ee5 v\u1ec1 m\u1ed9t c\u1ea5u tr\u00fac HTML c\u01a1 b\u1ea3n:<\/p>\n<pre><code>&lt;!DOCTYPE html&gt;\r\n&lt;html lang=\"vi\"&gt;\r\n  &lt;head&gt;\r\n    &lt;meta charset=\"UTF-8\"&gt;\r\n    &lt;title&gt;Ti\u00eau \u0111\u1ec1 trang web&lt;\/title&gt;\r\n  &lt;\/head&gt;\r\n  &lt;body&gt;\r\n    &lt;h1&gt;Xin ch\u00e0o!&lt;\/h1&gt;\r\n    &lt;p&gt;\u0110\u00e2y l\u00e0 n\u1ed9i dung hi\u1ec3n th\u1ecb cho ng\u01b0\u1eddi d\u00f9ng.&lt;\/p&gt;\r\n  &lt;\/body&gt;\r\n&lt;\/html&gt;<\/code><\/pre>\n<p>Ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o ch\u1ee9c n\u0103ng c\u1ee7a t\u1eebng th\u00e0nh ph\u1ea7n:<\/p>\n<ul>\n<li><strong>&lt;!DOCTYPE html&gt;:<\/strong> \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ebb, m\u00e0 l\u00e0 l\u1eddi khai b\u00e1o. D\u00f2ng n\u00e0y th\u00f4ng b\u00e1o cho tr\u00ecnh duy\u1ec7t bi\u1ebft r\u1eb1ng t\u00e0i li\u1ec7u n\u00e0y \u0111ang s\u1eed d\u1ee5ng chu\u1ea9n HTML5 m\u1edbi nh\u1ea5t.<\/li>\n<li><strong>&lt;html&gt;:<\/strong> Th\u1ebb g\u1ed1c bao tr\u00f9m to\u00e0n b\u1ed9 t\u00e0i li\u1ec7u. M\u1ecdi m\u00e3 l\u1ec7nh kh\u00e1c \u0111\u1ec1u ph\u1ea3i n\u1eb1m trong th\u1ebb n\u00e0y.<\/li>\n<li><strong>&lt;head&gt;:<\/strong> Ph\u1ea7n \u0111\u1ea7u c\u1ee7a t\u00e0i li\u1ec7u. N\u1ed9i dung trong th\u1ebb n\u00e0y <strong>kh\u00f4ng<\/strong> hi\u1ec3n th\u1ecb tr\u1ef1c ti\u1ebfp tr\u00ean trang web. N\u00f3 ch\u1ee9a c\u00e1c th\u00f4ng tin metadata nh\u01b0 b\u1ea3ng m\u00e3 k\u00fd t\u1ef1 (UTF-8 \u0111\u1ec3 hi\u1ec3n th\u1ecb ti\u1ebfng Vi\u1ec7t), ti\u00eau \u0111\u1ec1 trang (hi\u1ec3n th\u1ecb tr\u00ean tab tr\u00ecnh duy\u1ec7t) v\u00e0 c\u00e1c li\u00ean k\u1ebft \u0111\u1ebfn file <a href=\"https:\/\/interdata.vn\/blog\/css-la-gi\/\">CSS<\/a>.<\/li>\n<li><strong>&lt;body&gt;:<\/strong> Ph\u1ea7n th\u00e2n t\u00e0i li\u1ec7u. \u0110\u00e2y l\u00e0 n\u01a1i ch\u1ee9a to\u00e0n b\u1ed9 n\u1ed9i dung m\u00e0 ng\u01b0\u1eddi d\u00f9ng nh\u00ecn th\u1ea5y, bao g\u1ed3m v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh, video v\u00e0 c\u00e1c n\u00fat b\u1ea5m.<\/li>\n<\/ul>\n<div class=\"highlight-cta-box\">\n<h3><span class=\"ez-toc-section\" id=\"Xay-dung-Website-Toc-do-cao-cung-InterData\"><\/span><span style=\"color: #ff0000;\">X\u00e2y d\u1ef1ng Website T\u1ed1c \u0111\u1ed9 cao c\u00f9ng InterData<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 website HTML c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 t\u1ea3i nhanh tr\u00ean m\u1ecdi thi\u1ebft b\u1ecb, b\u1ea1n c\u1ea7n m\u1ed9t h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 m\u1ea1nh m\u1ebd. <a href=\"https:\/\/interdata.vn\/\"><strong>InterData<\/strong><\/a> cung c\u1ea5p gi\u1ea3i ph\u00e1p <a href=\"https:\/\/interdata.vn\/blog\/cloud-server-may-chu-dam-may\/\">Cloud Server<\/a> v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a> hi\u1ec7u n\u0103ng cao v\u1edbi chi ph\u00ed t\u1ed1i \u01b0u.<\/p>\n<p>H\u1ec7 th\u1ed1ng ph\u00f9 h\u1ee3p cho m\u1ecdi nhu c\u1ea7u t\u1eeb h\u1ecdc t\u1eadp l\u1eadp tr\u00ecnh, x\u00e2y d\u1ef1ng web app, <a href=\"https:\/\/interdata.vn\/blog\/mmo-la-gi\/\">MMO<\/a> \u0111\u1ebfn v\u1eadn h\u00e0nh website th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed traffic l\u1edbn.<\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/interdata.vn\/cloud-server\/\">Xem Ngay B\u1ea3ng Gi\u00e1 Cloud Server InterData<\/a><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/interdata.vn\/thue-vps\/\">Xem Ngay B\u1ea3ng Gi\u00e1 VPS InterData<\/a><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Moi-quan-he-giua-HTML-CSS-va-JavaScript\"><\/span>M\u1ed1i quan h\u1ec7 gi\u1eefa HTML, CSS v\u00e0 JavaScript<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n web, HTML hi\u1ebfm khi ho\u1ea1t \u0111\u1ed9ng m\u1ed9t m\u00ecnh. B\u1ed9 ba HTML, CSS v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/javascript-la-gi\/\">JavaScript<\/a> t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho th\u1ebf gi\u1edbi web hi\u1ec7n \u0111\u1ea1i (<a href=\"https:\/\/interdata.vn\/blog\/front-end-la-gi\/\">Front-end<\/a> Development).<\/p>\n<p>\u0110\u1ec3 d\u1ec5 h\u00ecnh dung, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng vi\u1ec7c x\u00e2y d\u1ef1ng m\u1ed9t ng\u00f4i nh\u00e0:<\/p>\n<ul>\n<li><strong>HTML (B\u1ed9 khung x\u01b0\u01a1ng):<\/strong> HTML gi\u1ed1ng nh\u01b0 vi\u1ec7c b\u1ea1n d\u1ef1ng c\u1ed9t, x\u00e2y t\u01b0\u1eddng, ph\u00e2n chia c\u00e1c ph\u00f2ng. N\u00f3 t\u1ea1o n\u00ean c\u1ea5u tr\u00fac th\u00f4 c\u1ee7a ng\u00f4i nh\u00e0. Nh\u00e0 c\u00f3 c\u1eeda ch\u00ednh, c\u1eeda s\u1ed5 v\u00e0 m\u00e1i, nh\u01b0ng ch\u01b0a c\u00f3 m\u00e0u s\u1eafc hay n\u1ed9i th\u1ea5t.<\/li>\n<li><strong>CSS (Trang tr\u00ed v\u00e0 Th\u1ea9m m\u1ef9):<\/strong> CSS (Cascading Style Sheets) \u0111\u00f3ng vai tr\u00f2 nh\u01b0 s\u01a1n t\u01b0\u1eddng, l\u00e1t g\u1ea1ch v\u00e0 b\u1ed1 tr\u00ed n\u1ed9i th\u1ea5t. CSS gi\u00fap ng\u00f4i nh\u00e0 tr\u1edf n\u00ean \u0111\u1eb9p m\u1eaft. CSS quy \u0111\u1ecbnh m\u00e0u s\u1eafc, ph\u00f4ng ch\u1eef, kho\u1ea3ng c\u00e1ch v\u00e0 b\u1ed1 c\u1ee5c hi\u1ec3n th\u1ecb tr\u00ean c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c nhau.<\/li>\n<li><strong>JavaScript (Ch\u1ee9c n\u0103ng v\u00e0 T\u01b0\u01a1ng t\u00e1c):<\/strong> JavaScript gi\u1ed1ng nh\u01b0 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, n\u01b0\u1edbc v\u00e0 c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh trong nh\u00e0. N\u00f3 gi\u00fap ng\u00f4i nh\u00e0 &#8220;ho\u1ea1t \u0111\u1ed9ng&#8221;. Khi b\u1ea1n b\u1ea5m c\u00f4ng t\u1eafc, \u0111\u00e8n s\u00e1ng. Khi c\u00f3 ng\u01b0\u1eddi \u0111\u1ebfn g\u1ea7n, c\u1eeda t\u1ef1 \u0111\u1ed9ng m\u1edf. JavaScript t\u1ea1o ra c\u00e1c hi\u1ec7u \u1ee9ng \u0111\u1ed9ng v\u00e0 x\u1eed l\u00fd t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng tr\u00ean website.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37751\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-CSS-JavaScript.jpg\" alt=\"HTML, CSS v\u00e0 JavaScript\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-CSS-JavaScript.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-CSS-JavaScript-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-the-HTML-thong-dung-nhat-HTML-Tags\"><\/span>C\u00e1c th\u1ebb HTML th\u00f4ng d\u1ee5ng nh\u1ea5t (HTML Tags)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>HTML c\u00f3 h\u00e0ng tr\u0103m th\u1ebb kh\u00e1c nhau, nh\u01b0ng trong th\u1ef1c t\u1ebf, b\u1ea1n s\u1ebd th\u01b0\u1eddng xuy\u00ean l\u00e0m vi\u1ec7c v\u1edbi m\u1ed9t s\u1ed1 nh\u00f3m th\u1ebb ch\u1ee7 ch\u1ed1t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-The-van-ban\"><\/span>1. Th\u1ebb v\u0103n b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Headings (&lt;h1&gt; \u0111\u1ebfn &lt;h6&gt;):<\/strong> D\u00f9ng cho c\u00e1c ti\u00eau \u0111\u1ec1. <code>&lt;h1&gt;<\/code> c\u00f3 m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng cao nh\u1ea5t, th\u01b0\u1eddng d\u00f9ng cho t\u00ean b\u00e0i vi\u1ebft. <code>&lt;h6&gt;<\/code> c\u00f3 m\u1ee9c \u0111\u1ed9 th\u1ea5p nh\u1ea5t. Google d\u1ef1a v\u00e0o c\u00e1c th\u1ebb n\u00e0y \u0111\u1ec3 hi\u1ec3u c\u1ea5u tr\u00fac n\u1ed9i dung b\u00e0i vi\u1ebft.<\/li>\n<li><strong>Paragraph (&lt;p&gt;):<\/strong> D\u00f9ng \u0111\u1ec3 t\u1ea1o c\u00e1c \u0111o\u1ea1n v\u0103n b\u1ea3n th\u01b0\u1eddng.<\/li>\n<li><strong>Strong (&lt;strong&gt;):<\/strong> In \u0111\u1eadm v\u0103n b\u1ea3n quan tr\u1ecdng. Th\u1ebb n\u00e0y c\u0169ng b\u00e1o hi\u1ec7u cho Google bi\u1ebft t\u1eeb kh\u00f3a trong th\u1ebb c\u00f3 s\u1ee9c n\u1eb7ng h\u01a1n ch\u1eef th\u01b0\u1eddng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-The-lien-ket-va-da-phuong-tien\"><\/span>2. Th\u1ebb li\u00ean k\u1ebft v\u00e0 \u0111a ph\u01b0\u01a1ng ti\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Anchor (&lt;a&gt;):<\/strong> T\u1ea1o si\u00eau li\u00ean k\u1ebft (<a href=\"https:\/\/interdata.vn\/blog\/hyperlink-la-gi\/\">Hyperlink<\/a>) \u0111\u1ebfn trang kh\u00e1c.<\/li>\n<li><strong>Image (&lt;img&gt;):<\/strong> Ch\u00e8n h\u00ecnh \u1ea3nh. Th\u1ebb n\u00e0y kh\u00f4ng c\u00f3 th\u1ebb \u0111\u00f3ng (self-closing).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3-The-danh-sach\"><\/span>3. Th\u1ebb danh s\u00e1ch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Unordered <a href=\"https:\/\/interdata.vn\/blog\/list-trong-python\/\">List<\/a> (&lt;ul&gt;):<\/strong> T\u1ea1o danh s\u00e1ch kh\u00f4ng c\u00f3 th\u1ee9 t\u1ef1 (d\u00f9ng d\u1ea5u ch\u1ea5m tr\u00f2n \u0111\u1ea7u d\u00f2ng).<\/li>\n<li><strong>Ordered List (&lt;ol&gt;):<\/strong> T\u1ea1o danh s\u00e1ch c\u00f3 th\u1ee9 t\u1ef1 (1, 2, 3&#8230;).<\/li>\n<li><strong>List Item (&lt;li&gt;):<\/strong> X\u00e1c \u0111\u1ecbnh t\u1eebng m\u1ee5c nh\u1ecf trong danh s\u00e1ch.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4-The-khoi-va-noi-dong-Block-Inline\"><\/span>4. Th\u1ebb kh\u1ed1i v\u00e0 n\u1ed9i d\u00f2ng (Block &amp; Inline)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Div (&lt;div&gt;):<\/strong> T\u1ea1o m\u1ed9t kh\u1ed1i (block) \u0111\u1ec3 nh\u00f3m c\u00e1c ph\u1ea7n t\u1eed l\u1ea1i v\u1edbi nhau. Th\u1ebb n\u00e0y r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c b\u1ed1 c\u1ee5c trang web.<\/li>\n<li><strong>Span (&lt;span&gt;):<\/strong> D\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh d\u1ea1ng m\u1ed9t ph\u1ea7n nh\u1ecf v\u0103n b\u1ea3n n\u1eb1m trong d\u00f2ng (inline) m\u00e0 kh\u00f4ng l\u00e0m ng\u1eaft d\u00f2ng.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Uu-diem-va-Nhuoc-diem-cua-HTML\"><\/span>\u01afu \u0111i\u1ec3m v\u00e0 Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a HTML<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ecdi c\u00f4ng ngh\u1ec7 \u0111\u1ec1u c\u00f3 hai m\u1eb7t. Vi\u1ec7c hi\u1ec3u r\u00f5 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m gi\u00fap b\u1ea1n s\u1eed d\u1ee5ng HTML hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu-diem\"><\/span>\u01afu \u0111i\u1ec3m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/source-code-la-gi\/\">M\u00e3 ngu\u1ed3n<\/a> m\u1edf v\u00e0 Mi\u1ec5n ph\u00ed:<\/strong> B\u1ea1n kh\u00f4ng t\u1ed1n b\u1ea5t k\u1ef3 chi ph\u00ed n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng HTML.<\/li>\n<li><strong>T\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i:<\/strong> M\u1ecdi tr\u00ecnh duy\u1ec7t web tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec1u h\u1ed7 tr\u1ee3 HTML.<\/li>\n<li><strong>D\u1ec5 h\u1ecdc:<\/strong> C\u1ea5u tr\u00fac ng\u1eef ph\u00e1p \u0111\u01a1n gi\u1ea3n, tr\u1ef1c quan. Ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u c\u00f3 th\u1ec3 t\u1ea1o ra trang web \u0111\u1ea7u ti\u00ean ch\u1ec9 sau v\u00e0i gi\u1edd h\u1ecdc.<\/li>\n<li><strong>Th\u00e2n thi\u1ec7n v\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/seo-la-gi\/\">SEO<\/a>:<\/strong> C\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm nh\u01b0 Google c\u1ef1c k\u1ef3 \u01b0u \u00e1i c\u00e1c trang web c\u00f3 c\u1ea5u tr\u00fac HTML chu\u1ea9n v\u00e0 r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37748\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-3.jpg\" alt=\"HTML\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-3.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-3-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nhuoc-diem\"><\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>T\u00ednh t\u0129nh (Static):<\/strong> HTML ch\u1ec9 t\u1ea1o ra c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/web-tinh-la-gi\/\">trang web t\u0129nh<\/a>. N\u1ed9i dung kh\u00f4ng th\u1ec3 t\u1ef1 thay \u0111\u1ed5i n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 can thi\u1ec7p th\u1ee7 c\u00f4ng v\u00e0o m\u00e3 ngu\u1ed3n.<\/li>\n<li><strong>H\u1ea1n ch\u1ebf v\u1ec1 thi\u1ebft k\u1ebf:<\/strong> N\u1ebfu ch\u1ec9 d\u00f9ng HTML, giao di\u1ec7n web s\u1ebd r\u1ea5t th\u00f4 s\u01a1. B\u1ea1n b\u1eaft bu\u1ed9c ph\u1ea3i h\u1ecdc th\u00eam CSS \u0111\u1ec3 l\u00e0m \u0111\u1eb9p.<\/li>\n<li><strong>H\u00e0nh vi hi\u1ec3n th\u1ecb:<\/strong> \u0110\u00f4i khi, c\u00e1c tr\u00ecnh duy\u1ec7t c\u0169 s\u1ebd hi\u1ec3n th\u1ecb m\u1ed9t s\u1ed1 th\u1ebb HTML kh\u00e1c nhau, \u0111\u00f2i h\u1ecfi l\u1eadp tr\u00ecnh vi\u00ean ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"HTML5-la-gi-Su-cai-tien-vuot-bac\"><\/span>HTML5 l\u00e0 g\u00ec? S\u1ef1 c\u1ea3i ti\u1ebfn v\u01b0\u1ee3t b\u1eadc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>HTML5 l\u00e0 phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t v\u00e0 m\u1ea1nh m\u1ebd nh\u1ea5t hi\u1ec7n nay. S\u1ef1 ra \u0111\u1eddi c\u1ee7a HTML5 \u0111\u00e3 gi\u1ea3i quy\u1ebft nhi\u1ec1u h\u1ea1n ch\u1ebf c\u1ee7a c\u00e1c phi\u00ean b\u1ea3n tr\u01b0\u1edbc.<\/p>\n<p>\u0110i\u1ec3m n\u1ed5i b\u1eadt nh\u1ea5t c\u1ee7a HTML5 l\u00e0 s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a <strong>Semantic HTML (HTML ng\u1eef ngh\u0129a)<\/strong>. Thay v\u00ec d\u00f9ng th\u1ebb <code>&lt;div&gt;<\/code> cho m\u1ecdi th\u1ee9, HTML5 cung c\u1ea5p c\u00e1c th\u1ebb c\u00f3 \u00fd ngh\u0129a c\u1ee5 th\u1ec3 nh\u01b0:<\/p>\n<ul>\n<li><code>&lt;header&gt;<\/code>: Ph\u1ea7n \u0111\u1ea7u trang.<\/li>\n<li><code>&lt;nav&gt;<\/code>: Thanh \u0111i\u1ec1u h\u01b0\u1edbng menu.<\/li>\n<li><code>&lt;article&gt;<\/code>: N\u1ed9i dung b\u00e0i vi\u1ebft ch\u00ednh.<\/li>\n<li><code>&lt;footer&gt;<\/code>: Ch\u00e2n trang.<\/li>\n<\/ul>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng Semantic HTML gi\u00fap m\u00e3 ngu\u1ed3n tr\u1edf n\u00ean minh b\u1ea1ch. C\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 ng\u01b0\u1eddi khi\u1ebfm th\u1ecb (Screen Readers) c\u00f3 th\u1ec3 \u0111\u1ecdc n\u1ed9i dung t\u1ed1t h\u01a1n. \u0110\u1ed3ng th\u1eddi, Google Bot c\u0169ng hi\u1ec3u ch\u00ednh x\u00e1c c\u1ea5u tr\u00fac b\u00e0i vi\u1ebft, t\u1eeb \u0111\u00f3 x\u1ebfp h\u1ea1ng t\u1eeb kh\u00f3a t\u1ed1t h\u01a1n.<\/p>\n<p>Ngo\u00e0i ra, HTML5 h\u1ed7 tr\u1ee3 xem video v\u00e0 nghe nh\u1ea1c tr\u1ef1c ti\u1ebfp b\u1eb1ng th\u1ebb <code>&lt;video&gt;<\/code> v\u00e0 <code>&lt;audio&gt;<\/code> m\u00e0 kh\u00f4ng c\u1ea7n c\u00e0i \u0111\u1eb7t th\u00eam ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 nh\u01b0 Flash Player tr\u01b0\u1edbc kia.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-37749\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-5.jpg\" alt=\"HTML 5\" width=\"750\" height=\"525\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-5.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/11\/HTML-5-300x210.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-cong-cu-soan-thao-HTML-pho-bien\"><\/span>C\u00e1c c\u00f4ng c\u1ee5 so\u1ea1n th\u1ea3o HTML ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 vi\u1ebft m\u00e3 HTML, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m \u0111\u1eaft ti\u1ec1n. B\u1ea1n th\u1eadm ch\u00ed c\u00f3 th\u1ec3 d\u00f9ng Notepad m\u1eb7c \u0111\u1ecbnh tr\u00ean Windows. Tuy nhi\u00ean, \u0111\u1ec3 vi\u1ebft m\u00e3 nhanh v\u00e0 ch\u00ednh x\u00e1c, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c tr\u00ecnh so\u1ea1n th\u1ea3o code chuy\u00ean d\u1ee5ng (Code Editors).<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c c\u1ed9ng \u0111\u1ed3ng l\u1eadp tr\u00ecnh vi\u00ean tin d\u00f9ng:<\/p>\n<ul>\n<li><strong>Visual Studio Code (VS Code):<\/strong> \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay do Microsoft ph\u00e1t tri\u1ec3n. VS Code mi\u1ec5n ph\u00ed, nh\u1eb9 v\u00e0 c\u00f3 kho ti\u1ec7n \u00edch m\u1edf r\u1ed9ng (Extensions) kh\u1ed5ng l\u1ed3 h\u1ed7 tr\u1ee3 g\u1ee3i \u00fd code th\u00f4ng minh.<\/li>\n<li><strong>Sublime Text:<\/strong> N\u1ed5i ti\u1ebfng v\u1edbi t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd c\u1ef1c nhanh v\u00e0 giao di\u1ec7n \u0111\u01a1n gi\u1ea3n.<\/li>\n<li><strong>Atom:<\/strong> M\u1ed9t tr\u00ecnh so\u1ea1n th\u1ea3o <a href=\"https:\/\/interdata.vn\/blog\/open-source-la-gi\/\">m\u00e3 ngu\u1ed3n m\u1edf<\/a>, d\u1ec5 d\u00e0ng t\u00f9y bi\u1ebfn giao di\u1ec7n.<\/li>\n<\/ul>\n<p>N\u1ebfu b\u1ea1n m\u1edbi b\u1eaft \u0111\u1ea7u, VS Code l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u nh\u1ea5t nh\u1edd c\u1ed9ng \u0111\u1ed3ng h\u1ed7 tr\u1ee3 \u0111\u00f4ng \u0111\u1ea3o v\u00e0 nhi\u1ec1u t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-ve-HTML-FAQs\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 HTML (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Hoc-HTML-mat-bao-lau\"><\/span>H\u1ecdc HTML m\u1ea5t bao l\u00e2u?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u1eddi gian h\u1ecdc ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 t\u1eadp trung c\u1ee7a b\u1ea1n. \u0110\u1ec3 n\u1eafm v\u1eefng c\u00e1c th\u1ebb c\u01a1 b\u1ea3n v\u00e0 t\u1ea1o \u0111\u01b0\u1ee3c m\u1ed9t trang web \u0111\u01a1n gi\u1ea3n, b\u1ea1n ch\u1ec9 c\u1ea7n kho\u1ea3ng <strong>1 \u0111\u1ebfn 2 tu\u1ea7n<\/strong>. Tuy nhi\u00ean, \u0111\u1ec3 tr\u1edf th\u00e0nh chuy\u00ean gia v\u00e0 hi\u1ec3u s\u00e2u v\u1ec1 Semantic hay Accessibility, b\u1ea1n c\u1ea7n r\u00e8n luy\u1ec7n li\u00ean t\u1ee5c qua c\u00e1c d\u1ef1 \u00e1n th\u1ef1c t\u1ebf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Co-can-gioi-toan-de-hoc-HTML-khong\"><\/span>C\u00f3 c\u1ea7n gi\u1ecfi to\u00e1n \u0111\u1ec3 h\u1ecdc HTML kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 <strong>kh\u00f4ng<\/strong>. HTML l\u00e0 ng\u00f4n ng\u1eef \u0111\u00e1nh d\u1ea5u, kh\u00f4ng ph\u1ea3i ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh logic. B\u1ea1n kh\u00f4ng c\u1ea7n gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh hay t\u00ednh to\u00e1n ph\u1ee9c t\u1ea1p. B\u1ea1n ch\u1ec9 c\u1ea7n kh\u1ea3 n\u0103ng ghi nh\u1edb c\u1ea5u tr\u00fac v\u00e0 t\u01b0 duy s\u1eafp x\u1ebfp b\u1ed1 c\u1ee5c h\u1ee3p l\u00fd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"File-HTML-co-duoi-mo-rong-la-gi\"><\/span>File HTML c\u00f3 \u0111u\u00f4i m\u1edf r\u1ed9ng l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c t\u1eadp tin HTML th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u01b0u v\u1edbi \u0111u\u00f4i m\u1edf r\u1ed9ng l\u00e0 <code>.html<\/code> ho\u1eb7c <code>.htm<\/code>. Tr\u00ecnh duy\u1ec7t s\u1ebd nh\u1eadn di\u1ec7n \u0111u\u00f4i n\u00e0y \u0111\u1ec3 x\u1eed l\u00fd hi\u1ec3n th\u1ecb. \u0110u\u00f4i <code>.html<\/code> l\u00e0 \u0111\u1ecbnh d\u1ea1ng ph\u1ed5 bi\u1ebfn v\u00e0 \u0111\u01b0\u1ee3c khuy\u00ean d\u00f9ng hi\u1ec7n nay.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-co-the-viet-HTML-tren-dien-thoai-khong\"><\/span>T\u00f4i c\u00f3 th\u1ec3 vi\u1ebft HTML tr\u00ean \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f3. Hi\u1ec7n nay c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i h\u1ed7 tr\u1ee3 vi\u1ebft code HTML. Tuy nhi\u00ean, vi\u1ec7c thao t\u00e1c tr\u00ean m\u00e0n h\u00ecnh nh\u1ecf v\u00e0 b\u00e0n ph\u00edm \u1ea3o s\u1ebd ch\u1eadm h\u01a1n nhi\u1ec1u so v\u1edbi m\u00e1y t\u00ednh. \u0110i\u1ec7n tho\u1ea1i ch\u1ec9 ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eeda nhanh ho\u1eb7c h\u1ecdc t\u1eadp c\u01a1 b\u1ea3n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong-ket\"><\/span>T\u1ed5ng k\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ch\u00fang ta \u0111\u00e3 c\u00f9ng nhau t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 HTML. C\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng, HTML l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i c\u1ee7a Internet. D\u00f9 c\u00f4ng ngh\u1ec7 web c\u00f3 ph\u00e1t tri\u1ec3n \u0111\u1ebfn \u0111\u00e2u, HTML v\u1eabn gi\u1eef vai tr\u00f2 kh\u00f4ng th\u1ec3 thay th\u1ebf trong vi\u1ec7c \u0111\u1ecbnh h\u00ecnh c\u1ea5u tr\u00fac th\u00f4ng tin.<\/p>\n<p>N\u1eafm v\u1eefng HTML l\u00e0 b\u01b0\u1edbc \u0111i \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t tr\u00ean h\u00e0nh tr\u00ecnh tr\u1edf th\u00e0nh l\u1eadp tr\u00ecnh vi\u00ean web ho\u1eb7c chuy\u00ean gia Digital Marketing. Ki\u1ebfn th\u1ee9c n\u00e0y gi\u00fap b\u1ea1n ch\u1ee7 \u0111\u1ed9ng h\u01a1n trong c\u00f4ng vi\u1ec7c v\u00e0 m\u1edf ra nhi\u1ec1u c\u01a1 h\u1ed9i ngh\u1ec1 nghi\u1ec7p h\u1ea5p d\u1eabn.<\/p>\n<p>H\u00e3y b\u1eaft \u0111\u1ea7u vi\u1ebft nh\u1eefng d\u00f2ng code \u0111\u1ea7u ti\u00ean ngay h\u00f4m nay. \u0110\u1eebng qu\u00ean trang b\u1ecb cho m\u00ecnh m\u1ed9t h\u1ea1 t\u1ea7ng l\u01b0u tr\u1eef website m\u1ea1nh m\u1ebd t\u1ea1i <strong>InterData<\/strong> \u0111\u1ec3 \u0111\u01b0a s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n \u0111\u1ebfn v\u1edbi th\u1ebf gi\u1edbi m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 chuy\u00ean nghi\u1ec7p nh\u1ea5t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi \u0111i\u1ec1u g\u00ec t\u1ea1o n\u00ean c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t trang web? Khi b\u1ea1n truy c\u1eadp Facebook, Google hay \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y, tr\u00ecnh duy\u1ec7t \u0111ang hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 c\u1ee7a m\u1ed9t ng\u00f4n ng\u1eef n\u1ec1n t\u1ea3ng. Ng\u00f4n ng\u1eef \u0111\u00f3 ch\u00ednh l\u00e0 HTML. \u0110\u00e2y l\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 x\u00e2y<\/p>\n","protected":false},"author":11,"featured_media":37750,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[140],"tags":[],"class_list":["post-22771","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lap-trinh"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/22771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=22771"}],"version-history":[{"count":5,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/22771\/revisions"}],"predecessor-version":[{"id":37753,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/22771\/revisions\/37753"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/37750"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=22771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=22771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=22771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}