aspx页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Data.aspx.cs" Inherits="Data" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"><title></title><script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script><script type="text/javascript">//1，jquer方式调用asp.net后台方法 $(function () {$("#getuser").click(function () {$.ajax({type:"post",contentType:"application/json;utf-8",datatype:"json",url:"data.aspx/GetUser",data:"{}",success:function(data){var obj=eval("("+data.d+")");alert('姓名:'+obj.name+'年龄：'+obj.age);},error:function(err){alert(err);}});});});//2.原始ajax方式调用asp.net后台方法//创建xmlHttp对象var xmlHttpReq;function createXMLHttp() {if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlHttpReq = new XMLHttpRequest();}else{//code for IE5， IE6 xmlHttpReq = new ActiveXObject("Microsoft.XMLHttp");}}//创建请求函数function ajaxRequest(url) {createXMLHttp();xmlHttpReq.open('POST', url, false);xmlHttpReq.setRequestHeader("Content-type", "application/json");xmlHttpReq.onreadystatechange = callBack;xmlHttpReq.send(null);}//创建回调函数function callBack() {if (xmlHttpReq.readyState == 4) {alert(xmlHttpReq.readyState);if (xmlHttpReq.status == 200) {var res = xmlHttpReq.responseText; //res="{"d":"{name:\u0027puter\u0027,age:33}"}" ;
var obj=eval("("+res+")"); //obj.d="{name:'puter',age:33}";
var user=eval("("+obj.d+")"); //user={name:'puter',age:33}
alert("姓名:"+user.name+",年龄："+user.age);}}}function send() {var url = "Data.aspx/GetUser";ajaxRequest(url);}</script> </head> <body><form id="form1" runat="server"><div><input type="button" id="getuser" value="获得用户" /><input type="button" id="oldajax" value="oldajax" onclick="send()"/></div></form> </body> </html>
后台代码：
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.Script.Services; using System.Web.Services;public partial class Data : System.Web.UI.Page {protected void Page_Load(object sender, EventArgs e){}[WebMethod]public static string GetUser(){return "{name:'puter',age:33}";//return "sssssssss"; }}
