用ajax调用的后台老板到底哪错了急

 <script language="jscript" type="text/javascript">        var xmlHttp;        function CreateXmlHttp()        {            //创建对象            if (window.ActiveXObject)            {                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");            }            else if (window.XMLHttpRequest)            {                xmlHttp = new XMLHttpRequest();            }            //加载数据所在的服务器            var url = window.location.href + "/TestDiv";            xmlHttp.open("post", url, true);            xmlHttp.onreadystatechange = Way;            xmlHttp.send(null);        }        function Way()        {            if (xmlHttp.readystate == 4 && xmlHttp.status == 200)            {                document.getElementById("BindData").innerHTML = xmlHttp.responseText;            }        }    </script><div id="BindData">            </div>            <input id="Button1" type="button" value="重新绑定" onclick="CreateXmlHttp()"/>  [WebMethod()]    public static string TestDiv()    {        return "ajax局部刷新!";    }

 $.ajax({            type: "post",            url: "test.aspx/TestDiv",            data: "{}",            cache: false,            contentType: "application/json;charset=utf-8",            dataType: "json",            success: function(data) {               alert(data.d);            }        });