如何让旧版IE浏览器认识HTML5元素
<!--[if lt IE 9]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
< ![endif]-->
解读：
<!--[if lt IE 9]>
<script type="text/javascript">
var e=("abbr,article,aside,audio,canvas,datalist,details,"+ "figure,footer,header,hgroup,mark,menu,meter,nav,output,"+ "progress,section,time,video").split(',');
for(var i=0;i<e .length;i++){
document.createElement(e[i]); }
</script>
< ![endif]-->
请看如下的例子：
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>unknown elements</title><style> article{display:block;border:1px solid red}</style></meta></head><body><article> <h1>welcome to feimos's blog</h1> <p>This is your <span>first time to visit this webSite.</span></p></article>
</body>
</html>