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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
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<body>
<input type="text" name="" class="content" id="content"/>
<button>创建节点</button>
<ul>
<li>111</li>
</ul>
</body>
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原文：http://www.cnblogs.com/ll-taj/p/5250863.html