JS获取级联样式表中的属性值
w3c
window.getComputedStyle(要计算的元素对象,null).marginLeft
document.defaultView.getComputedStyle(要计算的元素对象,null).marginLeft
IE:
id.currentStyle["marginLeft"]
对象.currentStyle["marginLeft"]
访问样式表
window.getComputedStyle(要计算的元素对象,null).marginLeft
document.defaultView.getComputedStyle(要计算的元素对象,null).marginLeft
IE:
id.currentStyle["marginLeft"]
对象.currentStyle["marginLeft"]
访问样式表
+展开
-HTML
<!!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>JS控制样式</title>
<style type="text/css">
/*这个不要去啊。。*/
* {
font-size:12px;
}
</style>
<script type="text/javascript">
(function () {
if (window.CSSStyleSheet) {
var wc = window.CSSStyleSheet.prototype;
wc.addRule = function (a, b) {
var wc = this;
wc.insertRule(a + "{" + b + "}", wc.cssRules.length);
};
wc.removeRule = function (a) {
var wc = this;
wc.deleteRule(a);
};
wc.__defineGetter__("rules", new Function("return this.cssRules"));
}
})();
var addRule = function (a, b) {
var wc = document.styleSheets[0], i;
for (i = 0 ; i < wc.rules.length ; i ++) if (wc.rules[i].selectorText == a) wc.removeRule(i);
wc.addRule(a, b);
};
var add = function () {
var wc = document.getElementById("wc").value;
if (/([^\{]+)\s*(\{[^}]+\})/.test(wc)) {
addRule(RegExp.$1, RegExp.$2);
} else {
alert("样式错误");
}
};
</script>
<span class="font">我是字</span><hr >
<button onclick="add()">控制</button>
<textarea style="width:500px;height:500px;" id="wc">
.font {
font-size:18px;
font-weight:bold;
line-height:20px;
color:#FF0000;
}
</textarea>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>JS控制样式</title>
<style type="text/css">
/*这个不要去啊。。*/
* {
font-size:12px;
}
</style>
<script type="text/javascript">
(function () {
if (window.CSSStyleSheet) {
var wc = window.CSSStyleSheet.prototype;
wc.addRule = function (a, b) {
var wc = this;
wc.insertRule(a + "{" + b + "}", wc.cssRules.length);
};
wc.removeRule = function (a) {
var wc = this;
wc.deleteRule(a);
};
wc.__defineGetter__("rules", new Function("return this.cssRules"));
}
})();
var addRule = function (a, b) {
var wc = document.styleSheets[0], i;
for (i = 0 ; i < wc.rules.length ; i ++) if (wc.rules[i].selectorText == a) wc.removeRule(i);
wc.addRule(a, b);
};
var add = function () {
var wc = document.getElementById("wc").value;
if (/([^\{]+)\s*(\{[^}]+\})/.test(wc)) {
addRule(RegExp.$1, RegExp.$2);
} else {
alert("样式错误");
}
};
</script>
<span class="font">我是字</span><hr >
<button onclick="add()">控制</button>
<textarea style="width:500px;height:500px;" id="wc">
.font {
font-size:18px;
font-weight:bold;
line-height:20px;
color:#FF0000;
}
</textarea>
</body>
</html>
加支付宝好友偷能量挖...
