用 AJAX 读取xml 节点属性值

 

<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>
posted @ 2009-06-02 00:50  funnyzak  阅读(526)  评论(0)  编辑  收藏  举报