JS正则匹配style,width,height等属性

str=str.replace(/[ t]*style[ t]*=[ t]*("[^"]+")|('[^']+')/ig,"");
str=str.replace(/[ t]*width[ t]*=[ t]*("[^"]+")|('[^']+')/ig,"");
str=str.replace(/[ t]*height[ t]*=[ t]*("[^"]+")|('[^']+')/ig,"");
str=str.replace(/[ t]*width[ t]*=[ t]*[^ t]+/ig,"");
str=str.replace(/[ t]*height[ t]*=[ t]*[^ t]+/ig,"");

使用实例

图片自适应问题,保留宽度,删除高度

html部分

<body onload='clearheight()'>
<div id='con'>
<p>这里是内容,很多图片内容啊<p>
</div>
</body>

js部分

<script type="text/javascript"> 
function clearheight() 
{ 
var e=document.getElementById("con"); 
var scon=e.innerHTML; 
scon = scon.replace(/[ t]*height[ t]*=[ t]*("[^"]+")|('[^']+')/ig,""); 
scon = scon.replace(/[ t]*height[ t]*=[ t]*[^ t]+/ig,"");
e.innerHTML=str1; 
} 
</script>