一个Ajax类


            程序代码:<script type="text/javascript">function Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc) {this.Url = sUrl;this.QueryString = sQueryString;this.XmlHttp = this.createXMLHttpRequest();if (this.XmlHttp == null) {alert("erro");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+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString();this.XmlHttp.open("GET",queryString,true);this.XmlHttp.send(null);}Ajax.prototype.post = function() {sUrl = this.Url;var sUrl = sUrl + "?timeStamp=" + new Date().getTime();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。");}}} </script>使用方法:<script type="text/javascript">var classAjax = new Ajax(sUrl,sRecvTyp,sQueryString,oResultFunc);classAjax.post();//post方式发送数据classAjax.get();//get方式发送数据//sUrl发送地址//sRecvTyp 接受数据类型:0为xml 1为text//oResultFunc 返回结果处理函数</script>应用实例：<script type="text/javascript">var ajax1 = new Ajax("1.asp",0,"id="+id,bacal);ajax1.post();function bacal(rexm){//返回数据处理函数;}</script>