tryjsref_style_create 在线代码实例

实例代码( Tip: 登录后体验更佳 )
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<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p>点击按钮创建一个 STYLE 元素，并把它放置在头部区域。</p>
<button onclick="myFunction()">尝试一下</button>
<p>被创建的 style 元素包含了改变文档 font 属性的 css 声明。</p>
<script>
function myFunction()
{
var x = document.createElement("STYLE");
var t = document.createTextNode("body {font:20px verdana;}");
x.appendChild(t);
document.head.appendChild(x);
};
</script>
</body>
</html>
 
 
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运行结果
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