解决ie8下h5元素兼容性的问题

• <header>定义页面或区段的头部；
• <footer>定义页面或区段的尾部；
• <nav>定义页面或区段的导航区域；
• <section>页面的逻辑区域或内容组合；
• <article>定义正文或一篇完整的内容；
• <aside>定义补充或相关内容；

Ⅰ. 

<!--[if lt IE 9]> 
<script> 
   (function() {
     if (! 
     /*@cc_on!@*/
     0) return;
     var e = "abbr, article, aside, audio, canvas, datalist, details, dialog, eventsource, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, time, video".split(', ');
     var i= e.length;
     while (i--){
         document.createElement(e[i])
     } 
})() 
</script>
<![endif]-->

　　

<!--[if lt IE 9]> 
<script> 
   (function() {
     if (! 
     /*@cc_on!@*/
 0) return;
 var e = "abbr, article, aside, audio, canvas, datalist, details, dialog, eventsource, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, time, video".split(', ');
 var i= e.length;
 while (i--){
 document.createElement(e[i])
 } 
})() 
</script>

<![endif]-->