技术共享
<!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>访问节点</title>
<script language="javascript">
function searchDOM(){
//放在函数内，页面加载完成后才用<body>的onload加载
var oLi=document.getElementsByTagName("li");
//输出长度、标签名称以及某项的文本节点值
alert(oLi.length " " oLi[0].tagName " " oLi[3].childNodes[0].nodeValue);//此处的tagName也可改写为nodeName
}
</script>
</head>
<body onload="searchDOM()">
<ul>客户端语言
<li>HTML</li>
<li>JavaScript</li>
<li>CSS</li>
</ul>
<ul>服务器端语言
<li>ASP.NET</li>
<li>JSP</li>
<li>PHP</li>
</ul>
</body>
</html>