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function send_request(callback, urladdress, isReturnData){
var xmlhttp = getXMLHttpRequest();
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState == 4) {//readystate Ϊ4¼´Êý¾Ý´«Êä½áÊø
try{
if(xmlhttp.status == 200){
if(isReturnData && isReturnData==true){
callback(xmlhttp.responseText);
}
}else{
callback("±§Ç¸£¬Ã»ÕÒµ½´ËÒ³Ãæ:"+ urladdress +"");
}
} catch(e){
callback("±§Ç¸£¬·¢ËÍÇëÇóʧ°Ü£¬ÇëÖØÊÔ " + e);
}
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var classAjax = new Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc);
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classAjax.get();//get·½Ê½·¢ËÍÊý¾Ý
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<head>
<title>AjaxTest</title>
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
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