<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JQuery</title>
</head>
<script type="text/javascript" src="../jquery-1.4.2.min.js">
</script>
<script type="text/javascript">
$(function(){
//alert($("li").first().innerHTML);
var dxy=document.getElementById("dxy");
alert(dxy.innerHTML);
});
</script>
<body>
<ul id="dxy">
<li>1</li>
<li>2</li>
</ul>
</body>
</html>
结果： <li>1</li>
<li>2</li>