示例一:该示例返回每个Node 的value.
<html>
<body>
<script type="text/vbscript">
set xmlDoc=CreateObject("Microsoft.XMLDOM")
xmlDoc.async="false"
xmlDoc.load("note.xml")
for each x in xmlDoc.documentElement.childNodes
document.write(x.childnodes(0).nodeValue & "<br />")
next
</script>
</body>
</html
准备一个note.xml文件,很简单几行:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- Edited with XML Spy v4.2 -->
<note time="12:03:46">
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
示例二:创建一个XMLHttpRequest.
<html>
<head>
<script type="text/javascript">
var xmlhttp
function loadXMLDoc(url)
{
// code for Mozilla, etc.
if (window.XMLHttpRequest)
{
xmlhttp=new XMLHttpRequest()
xmlhttp.onreadystatechange=state_Change
xmlhttp.open("GET",url,true)
xmlhttp.send(null)
}
// code for IE
else if (window.ActiveXObject)
{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
if (xmlhttp)
{
xmlhttp.onreadystatechange=state_Change
xmlhttp.open("GET",url,true)
xmlhttp.send()
}
}
}
function state_Change()
{
// if xmlhttp shows "loaded"
if (xmlhttp.readyState==4)
{
// if "OK"
if (xmlhttp.status==200)
{
alert("XML data OK")
document.getElementById('A1').innerHTML=xmlhttp.status
document.getElementById('A2').innerHTML=xmlhttp.statusText
document.getElementById('A3').innerHTML=xmlhttp.responseText
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText)
}
}
}
</script>
</head>
<body script_onload="loadXMLDoc('note.xml')">
<h2>Using the HttpRequest Object</h2>
<p><b>status:</b>
<span id="A1"></span>
</p>
<p><b>status text:</b>
<span id="A2"></span>
</p>
<p><b>response:</b>
<br><span id="A3"></span>
</p>
</body>
</html>
对着代码 和运行结果看,很容易熟悉XMLHttpRequest对象.
function loadXMLDoc(url)中根据不同的客户端创建XMLHttpRequest对象,然后对传入的url向Server发送GET请求,true参数是为了表明要异步请求.完了之后 ,state_Change()被调用,该方法就是得到Server返回的状态.并传给网页显示出来.
posted on 2006-04-04 17:02
kelven 阅读(315)
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