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HTML 五中又新增加main标签

www.MyException.Cn  网友分享于:2013-02-20  浏览:8次
HTML 5中又新增加main标签
HTML 5新增加的标签元素已经够多的了,在2013年2月份,又增加了<main>标签,参考:
http://www.w3.org/html/wg/drafts/html/master/grouping-content.html#the-main-element

  其中定义如下:
The main element represents the main content of the body of a document or application. The main content area consists of content that is directly related to or expands upon the central topic of a document or central functionality of an application.

Authors must not include more than one main element in a document.

Authors must not include the main element as a child of an article, aside, footer, header or nav element

   也就是说,它是表达了document中的body的主要内容,但不能在一个document中有多个main,不能在article,aside,footer,header或者nav中包含main.下面是个例子:
 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Using main</title>
</head>
<body>
	<header>My page</header>
	<nav>
		[url=#]Home[/url]
	</nav>
	<main>
		<article>
			<h1>My article</h1>
			Content

		</article>
		<aside>
			More information

		</aside>
	</main>
	<footer>Copyright 2013</footer>
</body>
</html>



    标准中的又一个例子:

<main>

  <h1>Skateboards</h1>
  The skateboard is the way cool kids get around

  
  <article>
  <h2>Longboards</h2>
  Longboards are a type of skateboard with a longer 
  wheelbase and larger, softer wheels.

  ... 

  ... 

  </article>

  <article>
  <h2>Electric Skateboards</h2>
  These no longer require the propelling of the skateboard
  by means of the feet; rather an electric motor propels the board, 
  fed by an electric battery.

  ... 

  ... 

  </article>

</main>

  <!-- other content -->

  

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