<html>
<head>
<script type="text/javascript">
var xmlhttp;
//这里就是传递的一个变量 最好命名为cfun
function loadXMLDoc(cfun)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
xmlhttp.onreadystatechange=cfun;
xmlhttp.open("GET","http://www.w3school.com.cn/example/xmle/books.xml",true);
xmlhttp.send();
}
function aa()
{
var txt,x,i;
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
xmlDoc=xmlhttp.responseXML;
txt="";
x=xmlDoc.getElementsByTagName("title");
for (i=0;i<x.length;i++)
{
txt=txt + x[i].childNodes[0].nodeValue + "<br />";
}
document.getElementById("myDiv").innerHTML=txt;
}
}
</script>
</head>
<body>
<h2>My Book Collection:</h2>
<div id="myDiv"></div>
<button type="button" οnclick="loadXMLDoc(aa)">获得我的图书收藏列表</button>
</body>
</html>