封装
function getStyle(obj , attr){
return obj.currentStyle?obj.currentStyle[attr]:getComputedStyle(obj)[attr]; //兼容写法IE:火狐
};
效果如下：
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
<style>
*{
margin: 0;
padding: 0;
}
#box{
margin: 50px auto;
300px;
height: 250px;
color: #fff;
background:#70aa39;
text-align: center;
line-height: 50px;
}
</style>
</head>
<body>
<div id="box"></div>
<script>
var oBox = document.getElementById("box"),
oW = parseFloat(getStyle(oBox , "width")),
oH = parseFloat(getStyle(oBox , "height"));
oBox.innerHTML = "宽:"+oW+"px"+"<br/>"+"高:"+oH+"px";
//封装
function getStyle(obj , attr){
return obj.currentStyle?obj.currentStyle[attr]:getComputedStyle(obj)[attr]; //兼容写法IE:火狐
};
</script>
</body>
</html>