// JavaScript Document
function Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc) {
this.Url = sUrl;
this.QueryString = sQueryString;
this.XmlHttp = this.createXMLHttpRequest();
if (this.XmlHttp == null) {
alert("您所请求的页面有异常!");
return;
}
var objxml = this.XmlHttp;
objxml.onreadystatechange = function (){Ajax.handleStateChange(objxml,sRecvTyp,oResultFunc)};
}
Ajax.prototype.createXMLHttpRequest = function() {
try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}
try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}
try { return new XMLHttpRequest(); } catch(e) {}
return null;
}
Ajax.prototype.createQueryString = function () {
var queryString = this.QueryString;
return queryString;
}
Ajax.prototype.get = function () {
sUrl = this.Url;
var queryString="";
(sUrl.indexOf("?") >= 0)?queryString = sUrl+"&timeStamp=" + new Date().getTime() + "&" + this.createQueryString():queryString = sUrl+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString();
this.XmlHttp.open("GET",queryString,true);
this.XmlHttp.send(null);
}
Ajax.prototype.post = function() {
sUrl = this.Url;
(sUrl.indexOf("?") >= 0)?sUrl= sUrl + "&timeStamp=" + new Date().getTime()+ "&" + this.createQueryString():sUrl= sUrl+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString();
var queryString = this.createQueryString();
this.XmlHttp.open("POST",sUrl,true);
this.XmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
this.XmlHttp.send(queryString);
}
Ajax.handleStateChange = function (XmlHttp,sRecvTyp,oResultFunc) {
if (XmlHttp.readyState == 4) {
if (XmlHttp.status == 200) {
oResultFunc(sRecvTyp?XmlHttp.responseXML:XmlHttp.responseText);
} else {
alert("您所请求的页面有异常!");
}
}
} 
/*调用方式
userInfoUrl -> 处理数据的php文件地址
parama -> 传递给php的参数
bacal -> 处理返回的数据
var updateUserInfo = new Ajax(userInfoUrl,0,parama,bacal);
updateUserInfo.post();
function bacal(requesttext){
	alert(requesttext);	//打出返回的数据
}
*/