{"id":10870,"date":"2013-07-13T07:00:00","date_gmt":"2013-07-13T07:00:00","guid":{"rendered":"https:\/\/kiencang.net\/2013\/07\/13\/the-doctype-va-html-cap-doi-hoan-canh\/"},"modified":"2013-07-13T07:00:00","modified_gmt":"2013-07-13T07:00:00","slug":"the-doctype-va-html-cap-doi-hoan-canh","status":"publish","type":"post","link":"https:\/\/kiencang.net\/the-doctype-va-html-cap-doi-hoan-canh\/","title":{"rendered":"Th\u1ebb doctype v\u00e0 HTML: c\u1eb7p \u0111\u00f4i ho\u00e0n c\u1ea3nh!"},"content":{"rendered":"\n<p>Th\u1ebb &lt;!DOCTYPE&gt; kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ebb HTML, nh\u01b0ng n\u1ebfu bu\u1ed9c ph\u1ea3i ch\u1ecdn 3 th\u1ebb quan tr\u1ecdng nh\u1ea5t trong m\u1ed9t trang HTML th\u00ec v\u1edbi t\u00f4i &lt;!DOCTYPE&gt; lu\u00f4n chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed ch\u1eafc ch\u1eafn.<\/p>\n\n\n\n<p>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a th\u1ebb &lt;!DOCTYPE&gt;:<\/p>\n\n\n\n<ul><li>\u0110\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 th\u00f4ng b\u00e1o cho tr\u00ecnh duy\u1ec7t bi\u1ebft phi\u00ean b\u1ea3n ng\u00f4n ng\u1eef HTML n\u00e0o \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, nh\u1edd \u0111\u00f3 tr\u00ecnh duy\u1ec7t bi\u00ean d\u1ecbch m\u00e3 \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c;<\/li><li>R\u1ea5t quan tr\u1ecdng nh\u01b0ng l\u1ea1i \u00edt khi \u0111\u01b0\u1ee3c \u0111\u1ec3 \u00fd, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi ng\u01b0\u1eddi m\u1edbi vi\u1ebft HTML;<\/li><li>Lu\u00f4n \u0111\u1ee9ng \u1edf v\u1ecb tr\u00ed \u0111\u1ea7u ti\u00ean trong trang HTML &#8211; tr\u01b0\u1edbc c\u1ea3 <a href=\"https:\/\/kiencang.net\/html-trong-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">th\u1ebb m\u1edf &lt;html><\/a>, v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb m\u1edd h\u01a1n so v\u1edbi c\u00e1c d\u00f2ng code;<\/li><li>N\u1ebfu kh\u00f4ng khai b\u00e1o DOCTYPE th\u00ec trang HTML \u0111\u01a1n gi\u1ea3n v\u1eabn hi\u1ec3n th\u1ecb \u0111\u01b0\u1ee3c, nh\u01b0ng n\u1ebfu trang HTML c\u00f3 code nhi\u1ec1u v\u00e0 ph\u1ee9c t\u1ea1p m\u00e0 kh\u00f4ng c\u00f3 DOCTYPE th\u00ec th\u01b0\u1eddng d\u1eabn t\u1edbi t\u00ecnh tr\u1ea1ng hi\u1ec3n th\u1ecb kh\u00f4ng th\u1ed1ng nh\u1ea5t v\u00e0\/ho\u1eb7c hi\u1ec3n th\u1ecb l\u1ed7i;<\/li><li>M\u00e3 khai b\u00e1o DOCTYPE t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f3 nh\u1edb v\u00e0 d\u00e0i d\u00f2ng, tr\u1eeb DOCTYPE c\u1ee7a HTML5 th\u00ec l\u1ea1i r\u1ea5t \u0111\u01a1n gi\u1ea3n;<\/li><li>\u0110a s\u1ed1 c\u00e1c ph\u1ea7n m\u1ec1m \u0111\u1ec3 g\u00f5 code HTML nh\u01b0 Adobe Dreamweaver hay Komodo Edit \u0111\u1ec1u t\u1ea1o s\u1eb5n DOCTYPE cho b\u1ea1n;<\/li><\/ul>\n\n\n\n<p>Gi\u1edd ta h\u00e3y xem th\u1ebb DOCTYPE c\u1ee7a m\u1ed9t s\u1ed1 trang web:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"451\" height=\"65\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-adobe.png\" alt=\"\" class=\"wp-image-12164\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-adobe.png 451w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-adobe-300x43.png 300w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><figcaption>DOCTYPE trang web c\u1ee7a h\u00e3ng ph\u1ea7n m\u1ec1m Adobe<\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"251\" height=\"77\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-google.png\" alt=\"\" class=\"wp-image-12165\"\/><figcaption>DOCTYPE trang web c\u1ee7a Google<\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"101\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-vnexpress.png\" alt=\"\" class=\"wp-image-12166\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-vnexpress.png 400w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/02\/doctype-vnexpress-300x76.png 300w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption>DOCTYPE trang web b\u00e1o \u0111i\u1ec7n t\u1eed Vnexpress<\/figcaption><\/figure><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>Ti\u1ebfp \u0111\u1ebfn ta s\u1ebd xem c\u00f3 nh\u1eefng lo\u1ea1i DOCTYPE n\u00e0o v\u00e0 m\u1eabu code c\u1ee5 th\u1ec3:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>Phi\u00ean B\u1ea3n<\/th><th>M\u1eabu Code<\/th><\/tr><tr><td>HTML 5<\/td><td>&nbsp;&lt;!DOCTYPE html&gt;<\/td><\/tr><tr><td>HTML 4.01 Strict<\/td><td>&lt;!DOCTYPE HTML PUBLIC &#8220;-\/\/W3C\/\/DTD HTML 4.01\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/html4\/strict.dtd&#8221;&gt;<\/td><\/tr><tr><td>HTML 4.01 Transitional<\/td><td>&lt;!DOCTYPE HTML PUBLIC &#8220;-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/html4\/loose.dtd&#8221;&gt;<\/td><\/tr><tr><td>HTML 4.01 Frameset<\/td><td>&lt;!DOCTYPE HTML PUBLIC &#8220;-\/\/W3C\/\/DTD HTML 4.01 Frameset\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/html4\/frameset.dtd&#8221;&gt;<\/td><\/tr><tr><td>XHTML 1.0 Strict<\/td><td>&nbsp;&lt;!DOCTYPE html PUBLIC &#8220;-\/\/W3C\/\/DTD XHTML 1.0 Strict\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-strict.dtd&#8221;&gt;<\/td><\/tr><tr><td>XHTML 1.0 Transitional<\/td><td>&nbsp;&lt;!DOCTYPE html PUBLIC &#8220;-\/\/W3C\/\/DTD XHTML 1.0 Transitional\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-transitional.dtd&#8221;&gt;<\/td><\/tr><tr><td>XHTML 1.0 Frameset<\/td><td>&nbsp;&lt;!DOCTYPE html PUBLIC &#8220;-\/\/W3C\/\/DTD XHTML 1.0 Frameset\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-frameset.dtd&#8221;&gt;<\/td><\/tr><tr><td>XHTML 1.1<\/td><td>&nbsp;&lt;!DOCTYPE html PUBLIC &#8220;-\/\/W3C\/\/DTD XHTML 1.1\/\/EN&#8221; &#8220;http:\/\/www.w3.org\/TR\/xhtml11\/DTD\/xhtml11.dtd&#8221;&gt;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u0110\u1ecdc \u0111\u1ebfn \u0111\u00e2y c\u00f3 th\u1ec3 b\u1ea1n l\u1ea1i mu\u1ed1n h\u1ecfi l\u00e0 t\u1ea1i sao l\u1ea1i c\u00f3 nhi\u1ec1u phi\u00ean b\u1ea3n HTML \u0111\u1ebfn v\u1eady? <\/p>\n\n\n\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0, c\u0169ng gi\u1ed1ng nh\u01b0 ph\u1ea7n m\u1ec1m th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa, b\u1ed5 sung, c\u1eadp nh\u1eadt l\u00e0m cho n\u00f3 c\u00f3 nhi\u1ec1u phi\u00ean b\u1ea3n th\u00ec HTML c\u0169ng v\u1eady, n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c thay \u0111\u1ed5i, b\u1ed5 sung.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Th\u1ebb &lt;!DOCTYPE&gt; kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ebb HTML, nh\u01b0ng n\u1ebfu bu\u1ed9c ph\u1ea3i ch\u1ecdn 3 th\u1ebb quan tr\u1ecdng nh\u1ea5t trong m\u1ed9t trang HTML th\u00ec v\u1edbi t\u00f4i &lt;!DOCTYPE&gt; lu\u00f4n chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed ch\u1eafc ch\u1eafn. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a th\u1ebb &lt;!DOCTYPE&gt;: \u0110\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 th\u00f4ng b\u00e1o cho tr\u00ecnh duy\u1ec7t bi\u1ebft phi\u00ean b\u1ea3n ng\u00f4n ng\u1eef HTML n\u00e0o \u0111ang \u0111\u01b0\u1ee3c &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 doctype v\u00e0 HTML: c\u1eb7p \u0111\u00f4i ho\u00e0n c\u1ea3nh! &#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-doctype-va-html-cap-doi-hoan-canh\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Th\u1ebb doctype v\u00e0 HTML: c\u1eb7p \u0111\u00f4i ho\u00e0n c\u1ea3nh! &#8226; 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