让IE旧版本浏览器也支持HTML5的特性,可以通过IE支持的<!--[if]><![endif]-->标签引入html5.js <!DOCTYPE html><htmllang="en"><head> ... <!-- Le HTML5 shim, for IE6-8 support of HTML elements --> <!--[if lt IE 9]> <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> ... </head><body> ... </body></html> 附件为引入的html5.js,可以本地引入,也可以通过http://html5shim.googlecode.com/svn/trunk/html5.js引入