//IAddService.cs
namespace WcfService1
{[ServiceContract]public interface IAddService{[OperationContract][WebInvoke(Method="POST",RequestFormat=WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json,BodyStyle=WebMessageBodyStyle.WrappedRequest)]int Add(int a,int b);}
}//AddService.cs
namespace WcfService1
{[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]public class AddService : IAddService{public int Add(int a, int b){return a + b;}}
}

<!--添加一个WCF服务文件(如：AddService.svc)，文件内容修改成如下：-->
<%@ ServiceHost Language="C#" Debug="true" Service="WcfService1.AddService" %><!--配置WEB.CONFIG：--><system.serviceModel><serviceHostingEnvironment multipleSiteBindingsEnabled="true" /><bindings></bindings><behaviors><serviceBehaviors><behavior><!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false 并删除上面的元数据终结点 --><serviceMetadata httpGetEnabled="true"/><!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息 --><serviceDebug includeExceptionDetailInFaults="true"/></behavior></serviceBehaviors><endpointBehaviors><behavior name="AddServiceBehavior"><enableWebScript /></behavior></endpointBehaviors></behaviors><services><service name="WcfService1.AddService"><endpoint address=""  binding="webHttpBinding" contract="WcfService1.IAddService" behaviorConfiguration="AddServiceBehavior" ></endpoint></service></services></system.serviceModel>

  <system.serviceModel><bindings></bindings><behaviors><serviceBehaviors><behavior><!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false 并删除上面的元数据终结点 --><serviceMetadata httpGetEnabled="true"/><!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息 --><serviceDebug includeExceptionDetailInFaults="true"/></behavior></serviceBehaviors></behaviors><serviceHostingEnvironment aspNetCompatibilityEnabled="true"><serviceActivations><add relativeAddress="AddService.svc" service="WcfService1.AddService" factory="System.ServiceModel.Activation.WebScriptServiceHostFactory"/></serviceActivations></serviceHostingEnvironment></system.serviceModel>

        //简单封装一下：var $ = function (id) {return document.getElementById(id);};//获取原生的XMLHttpRequest对象function getXMLHTTPRequest() {var req = false;try {req = new XMLHttpRequest();} catch (err) {try {req = new ActiveXObject("Msxml2.XMLHTTP");} catch (err) {try {req = new ActiveXObject("Microsoft.XMLHTTP");} catch (err) {req = false;}}}return req;}$("btnGet").onclick = function () {var xmlhttp = getXMLHTTPRequest();xmlhttp.open("POST", "http://localhost:30348/AddService.svc/Add", true);xmlhttp.setRequestHeader("Content-type", "application/json");xmlhttp.onreadystatechange = function () {if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {var r = JSON.parse(xmlhttp.responseText);$("result").value = r.d;}};xmlhttp.send('{"a":' + $("num1").value + ',"b":' + $("num2").value + '}');}

        var jq = jQuery.noConflict();jq("#btnGet").click(function () {alert("click");jq.ajax("http://localhost:30348/AddService.svc/Add", {type: "POST",//dataType: "json",contentType: "application/json",data: '{"a":' + jq("#num1").val() + ',"b":' + jq("#num2").val() + '}',//data: 'a=' + jq("#num1").val() + '&b=' + jq("#num2").val(),success: function (data) {jq("#result").val(data.d);},error: function (x, textStatus, errorThrown) {alert(textStatus);}});});