<html>
<head>
<title>AjaxTest</title>
<script>
var xmlHttp;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
xmlHttp = new XMLHttpRequest();
}
}
function startRequest()
{
createXMLHttpRequest();
try
{
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET", "data.xml", true);
xmlHttp.send(null);
}
catch(exception)
{
alert("xmlHttp Fail");
}
}
function handleStateChange()
{
if(xmlHttp.readyState == 4)
{
if (xmlHttp.status == 200 || xmlHttp.status == 0)
{
var root = xmlHttp.responseXML.documentElement;
try
{
var info = root.getElementsByTagName("info")[0];
alert(info.getAttribute('type'));
}
catch(exception)
{
alert("The node is not exist");
}
}
}
}
</script>
</head>
<body>
<div>
<input type="button" value="AjaxTest" onclick="startRequest();" />
</div>
</body>
</html>
XML code <?xml version="1.0" encoding="GB2312"?>
<root>
<info type="student"></info>
</root>