如何利用js获取外联style
1
<html>
2<head>
3
<style>
4
.aa{width:100px;height:100px;background:#ccc;}
5</style>
6</head>
7<body>
8<div class="aa" id="aa"></div>
9<input type="button" value="获取" onclick="ddd()">
10<script>
11 var getRuntimeStyle = function(obj, k) {
12
var v = null;
13 if (obj.currentStyle) v = obj.currentStyle[k];
14 else v = window.getComputedStyle(obj, null).getPropertyValue(k);
15 return v;
16
}
17var ddd = function(){
18obj = document.getElementById('aa');
19alert(getRuntimeStyle(obj,'width'));
20alert(getRuntimeStyle(obj,'height'));
21alert(getRuntimeStyle(obj,'backgroundColor'));//IE用 style 的 js 属性，和 FF有区别，FF应该写background-color,即CSS属性
22alert(getRuntimeStyle(obj,'background-color'))
23
}
24</script>
25</body>
26</html>
<html>2
<head>3
<style>
4
.aa{width:100px;height:100px;background:#ccc;}
.aa5
</style>6
</head>7
<body>8
<div class="aa" id="aa"></div>9
<input type="button" value="获取" onclick="ddd()">10
<script>11
var getRuntimeStyle = function(obj, k) {12
var v = null;13
if (obj.currentStyle) v = obj.currentStyle[k];14
else v = window.getComputedStyle(obj, null).getPropertyValue(k);15
return v;16
}17
var ddd = function(){18
obj = document.getElementById('aa');19
alert(getRuntimeStyle(obj,'width'));20
alert(getRuntimeStyle(obj,'height'));21
alert(getRuntimeStyle(obj,'backgroundColor'));//IE用 style 的 js 属性，和 FF有区别，FF应该写background-color,即CSS属性22
alert(getRuntimeStyle(obj,'background-color'))23
}24
</script>25
</body>26
</html>