JavaScript 查找子节点简单示例

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>www.jb51.net 查找孩子结点</title>
<meta keywords="商品目录"/>
<meta description="JS查找孩子节点"/>
<script type="text/javascript">
   function getContent()
   {
   var x=document.getElementById("content");
   for(var i=0;i<x.childNodes.length;i++)
   {
     if((content=x.childNodes[i].innerHTML)=="目录")
     {
      var next=x.childNodes[i].nextSibling.nextSibling.textContent;
      console.log(next);
     }
   }
   }
   window.onload=getContent;
</script>
</head>
<body>
<div id="content">
<h3>商品</h3>
<div id="1">
 <p >this is the first paragragh</p>
</div>
<h3>作者</h3>
<div id="2">
 <p>this is the second paragragh</p>
</div>
<h3>目录</h3>
<div id="3">
 <p>this is the third paragragh</p>
</div>
</div>
</body>
</html>