您可以帮助老版本浏览器处理 HTML5。
所有现代浏览器都支持 HTML5。 此外,所有浏览器,不论新旧,都会自动把未识别元素当做行内元素来处理。 正因如此,您可以帮助老式浏览器处理”未知的“ HTML 元素。 注释:您甚至可以教授石器时代的 IE6 如何处理未知的 HTML 元素。
HTML5 定义了八个新的语义 HTML 元素。所有都是块级元素。 您可以把 CSS display 属性设置为 block
您可以通过浏览器 trick 向 HTML 添加任何新元素: 本例向 HTML 添加了一个名为 <myHero>:的新元素,并为其定义 display 样式:
<!DOCTYPE html>
<html>
<head>
<title>Creating an HTML Element</title>
<script>document.createElement("myHero")</script>
<style>
myHero {
display: block;
background-color: #ddd;
padding: 50px;
font-size: 30px;
}
</style>
</head>
<body>
<h1>My First Heading</h1>
<p>My first paragraph.</p>
<myHero>My First Hero</myHero>
</body>
</html>
<!DOCTYPE html> <html> <head> <title>Styling HTML5</title> <!--[if lt IE 9]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> </head> <body> <h1>My First Article</h1> <article> London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants. </article> </body> </html>
<!DOCTYPE html>
<html lang="en">
<head>
<title>HTML5 Skeleton</title>
<meta charset="utf-8">
<!--[if lt IE 9]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js">
</script>
<![endif]-->
<style>
body {font-family: Verdana, sans-serif; font-size:0.8em;}
header,nav, section,article,footer
{border:1px solid grey; margin:5px; padding:8px;}
nav ul {margin:0; padding:0;}
nav ul li {display:inline; margin:5px;}
</style>
</head>
<body>
<header>
<h1>HTML5 SKeleton</h1>
</header>
<nav>
<ul>
<li><a href="html5_semantic_elements.asp">HTML5 Semantic</a></li>
<li><a href="html5_geolocation.asp">HTML5 Geolocation</a></li>
<li><a href="html5_canvas.asp">HTML5 Graphics</a></li>
</ul>
</nav>
<section>
<h1>Famous Cities</h1>
<article>
<h2>London</h2>
<p>London is the capital city of England. It is the most populous city in the United Kingdom,
with a metropolitan area of over 13 million inhabitants.</p>
</article>
<article>
<h2>Paris</h2>
<p>Paris is the capital and most populous city of France.</p>
</article>
<article>
<h2>Tokyo</h2>
<p>Tokyo is the capital of Japan, the center of the Greater Tokyo Area,
and the most populous metropolitan area in the world.</p>
</article>
</section>
<footer>
<p>© 2014 W3Schools. All rights reserved.</p>
</footer>
</body>
</html>
作者:
信息录入:
文案编辑:
视频录制:
视频编辑:
图片编辑:
关键字修改: