封装ajax

1.JScript code

var Ajax = { GetXmlHttp : function () { var xmlHttp = null; try { xmlHttp = new XMLHttpRequest(); } catch (e) { try { xmlHttp = new ActiveXObject('Msxml2.XMLHTTP'); } catch (ee) { xmlHttp = new ActiveXObject('Microsoft.XMLHTTP'); } } return xmlHttp; }, Process : function (ajaxInfo, processFun) { var xmlObj = Ajax.GetXmlHttp(); if (!xmlObj) { alert("抱歉，你的浏览器不支持AJAX。"); return; } var method = ajaxInfo.Method.toUpperCase(); var data = null; xmlObj.open(method, ajaxInfo.Url, true); if (method == "POST") { data = ajaxInfo.Data; xmlObj.setRequestHeader("Content-Length", data.Length()); xmlObj.setRequestHeader("CONTENT-TYPE", "application/x-www-form-urlencoded"); } xmlObj.send(data); xmlObj.onreadystatechange = function () { if (xmlObj.readyState == 4) { if (xmlObj.status == 200) { var type = ajaxInfo.Type.toUpperCase(); if (type == "TEXT") { processFun(xmlObj.responseText); } else if (type == "XML") { processFun(xmlObj.responseXML); } else { alert("无法识别的返回方式"); } xmlObj = null; } } }; } }

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1.新建一个data.ashx页面，代码如下：

C# code

public void ProcessRequest(HttpContext context) { HttpResponse response = context.Response; response

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2.新建一个jason.aspx页面，部分JS代码如下：

JScript code

<script language="javascript" type="text/javascript"><!-- //var postData = "userName=abc&userPass=123"; //var request = { Method:"POST", Url:"data.ashx?rnd=" + Math.random(), Data:postData, Type:"TEXT" };//注释的部分是POST调用方式，下面是GET调用方式 var request = { Method:"GET", Url:"data.ashx?rnd=" + Math.random(), Data:null, Type:"TEXT" }; Ajax.Process(request, function (data) { var jason = "var obj = " + data + ";"; eval_r(jason); alert(obj.User.Name); }); //--></script>