<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>获取行间样式</title>
<style type="text/css">
#div1{width:200px;height:200px;background:red;margin:20px;}
</style>
<script type="text/javascript">
function getStyle(obj,name){
if(obj.currentStyle){
return obj.currentStyle[name];
}else{
return getComputedStyle(obj,false)[name];
}
};
setInterval(function (){
var oDiv = document.getElementById('div1');
oDiv.style.width = parseInt(oDiv.style.width)-1+'px';
oDiv.style.width = parseInt(getStyle(oDiv,'width'))-1+'px';
// alert( oDiv.style.width);
},30);
</script>
</head>
<body>
<div id="div1"></div>
</body>
</html>
