1.IE6下(6.0.2900.5512.xpsp3 55661-024-5236883-22262)
<script src="xx.js", 当xx.js的contentType为text/html将不会执行xx.js
2.IE7下
<link rel="stlesheet" href="xx.css"当xx.css的contentType为file时,该css将不会被渲染