简单的AJAX请求

<p><mce:script type="text/javascript"><!--<br>

var xmlHttp = false;<br>

var mslist = ["Msxml2.XMLHTTP", "Microsoft.XMLHTTP"];<br>

for (i = 0; i <= 1; i++) {<br>

try {<br>

xmlHttp = new ActiveXObject(mslist[i]);<br>

} catch (e) {<br>

xmlHttp = false;<br>

}<br>

}<br>

if (!xmlHttp && typeof (XMLHttpRequest) != "undefined") {<br>

try {<br>

xmlHttp = new XMLHttpRequest();<br>

} catch (e2) {<br>

xmlHttp = false;<br>

}<br>

}<br><br>

// --></mce:script><br>

<mce:script type="text/javascript"><!--<br>

function callServer() {<br>

var name = "z gh s";<br>

var url = "Default.aspx?test=" + escape(name);<br>

xmlHttp.open("GET", url, true);<br>

xmlHttp.onreadystatechange = updatePage;<br>

xmlHttp.send(null);<br>

}<br>

function updatePage() {<br>

if (xmlHttp.readyState <4) {<br>

document.getElementById("ContDiv").innerHTML = "加载中...";<br>

}<br>

if (xmlHttp.readyState == 4) {<br>

if (xmlHttp.status == 200) {<br>

var response = xmlHttp.responseText;<br>

document.getElementById("ContDiv").innerHTML = response;<br>

}<br>

}<br>

}<br><br>

// --></mce:script></p>
<p></p>
<p>第一个脚本块中创建XMLHttpRequest对象，第二个脚本块中发送请求，接受响应并更新ＵＩ界面
</p>