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HTML&CSS Basic Learning Note 4-defining document types

Source: Internet
Author: User
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Defining document types for HTML

There are many different documents in the Web world. The browser can display the document correctly only if you understand the type of document.

HTML also has a number of different versions, only the exact HTML version used in the page is fully understood, and the browser can display the HTML page exactly. This is <!. The use of doctype>.

<! The doctype> 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. is a document type declaration of a standard generic markup language that is intended to tell the standard generic subscript language parser What document type definitions should be used to parse the document.

<! The doctype> declaration must precede the
<! The doctype> declaration is not case sensitive and has no end tag.

DOCTYPE declaration for HTML 5: <! DOCTYPE html>.

Sample code content:

<! DOCTYPE html>
<meta charset= "UTF-8" >
<title> Add a document description </title>
<body>
<p> Add a document description to the page </p>
</body>

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M02/85/66/wKioL1eio86hjmd2AACBaJrYllo151.png-wh_500x0-wm_3 -wmp_4-s_2755616557.png "title=" 111.png "width=" "height=" 424 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:700px ; height:424px; "alt=" Wkiol1eio86hjmd2aacbajryllo151.png-wh_50 "/>

Original address: http://www.mayacoder.com/lesson/lesson?lesson_id=27&knowledge_id=5

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HTML&CSS Basic Learning Note 4-defining document types

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