html<! Doctype> Declaration Label

Source: Internet
Author: User

Html<!DOCTYPE>Declaration Label<DOCTYPE>The declaration is the first line of the HTML document, located in<HTML>label before<DOCTYPE>The declaration is not an HTML tag, it is a directive that instructs the Web browser to write which HTML version of the page to use in html4.01,<!DOCTYPE>The declaration refers to the DTD because html4.01 rules the markup language based on SGML,DTD so that the browser can properly present the content. HTML5 is not SGML-based, so there is no need to introduce DTDHTML5 declarations<!DOCTYPE HTML><MetaCharSet= "Utf-8">HTML 4.01<!DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01//en" "HTTP://WWW.W3.ORG/TR/HTML4/STRICT.DTD">

html<! Doctype> Declaration Label

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