针对不同浏览器获取到css文件里相关属性的两种

<div style="font-size:100px;">1111</div>
<p>2222</p>
<style>{font-size:50px;}</style>

function getCurCss(id,porp){
var obj = document.getElementById(id);
if (obj.currentStyle) {
return obj.currentStyle[prop];
} else if (window.getComputedStyle) {
propprop = prop.replace(/([A-Z])/g, "-$1");
propprop = prop.toLowerCase();
return document.defaultView.getComputedStyle(obj, null)[prop];
}
return null;
}
getCurCss(id,"fontSize");