本文實例講述了jQuery Ajax和getJSON獲取后臺普通json數據和層級json數據用法。分享給大家供大家參考，具體如下：
運行效果截圖如下：
具體代碼如下：
<!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> <title>Ajax和getJSON獲取后臺普通Json數據和層級Json數據解析</title> <script src="JS/jquery-1.8.0.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { //方式一 Ajax方式獲取Json數據 $.ajax({ url: 'jsondata.ashx?type=1', type: 'GET', dataType: 'json', timeout: 1000, cache: false, beforeSend: LoadFunction, //加載執行方法 error: erryFunction, //錯誤執行方法 success: succFunction //成功執行方法 }) function LoadFunction() { $("#list").html('加載中...'); } function erryFunction() { alert("error"); } function succFunction(tt) { var json = eval(tt); //數組 var tt = ""; $.each(json, function (index) { //循環獲取數據 var Id = json[index].id; var Name = json[index].name; var Age = json[index].age; var Score = json[index].score; tt += Id + "___" + Name + "___" + Age + "___" + Score + "<br>"; }); $("#list").html(''); $("#list").html(tt); } //方式二 Json方式獲取數據 $.getJSON( "jsondata.ashx?type=1", function (data) { //循環獲取數據 var tt = ""; $.each(data, function (k, v) { $.each(v, function (kk, vv) { tt += kk + ":" + vv + "___"; }); tt += "<br/>"; }); $("#list2").html(tt); } ); //方式三 Ajax方式獲取Json層級數據 $.ajax({ url: 'jsondata.ashx?type=3', type: 'GET', dataType: 'json', timeout: 1000, cache: false, beforeSend: LoadFunction1, //加載執行方法 error: erryFunction1, //錯誤執行方法 success: succFunction1 //成功執行方法 }) function LoadFunction1() { $("#list3").html('加載中...'); } function erryFunction1() { alert("error"); } function succFunction1(tt) { var json = eval(tt); //數組 var tt = ""; $.each(json, function (index) { //循環獲取數據 var Id = json[index].id; var Name = json[index].name; var Age = json[index].age; var Score = json[index].score; tt += Id + "___" + Name + "___" + Age + "___"; $.each(Score, function (k, v) { tt += k + ":" + v + "___"; }) tt += "<br/>"; }); $("#list3").html(''); $("#list3").html(tt); } //方式四 Json方式獲取層級數據 $.getJSON( "jsondata.ashx?type=3", function (json) { //循環獲取數據 var tt = ""; $.each(json, function (index) { //循環獲取數據 var Id = json[index].id; var Name = json[index].name; var Age = json[index].age; var Score = json[index].score; tt += Id + "___" + Name + "___" + Age + "___"; $.each(Score, function (k, v) { tt += k + ":" + v + "___"; }) tt += "<br/>"; }); $("#list4").html(''); $("#list4").html(tt); } ); }); </script></head><body> <p>方式一</p> <ul id="list"> </ul> ____________________________________ <p>方式二</p> <ul id="list2"> </ul> ____________________________________ <p>方式三</p> <ul id="list3"> </ul> ____________________________________ <p>方式四</p> <ul id="list4"> </ul></body></html><%@ WebHandler Language="C#" Class="jsondata" %>using System;using System.Web;using System.Web.Script.Serialization;using System.IO;using System.Text;using System.Collections;using System.Collections.Generic;using System.Data;using Newtonsoft.Json;public class jsondata : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; context.Response.Cache.SetNoStore(); string type = context.Request["type"]; if (type=="1") //普通數據 { List<Dictionary<String, String>> aa = new List<Dictionary<string, string>>(); for (int i = 0; i < 6; i++) { Dictionary<String, String> aaa = new Dictionary<string, string>(); aaa.Add("id", "no" + i); aaa.Add("name", "張三" + i); aaa.Add("age", "21"); aaa.Add("score", "1001"); aa.Add(aaa); } string json = JsonConvert.SerializeObject(aa, Formatting.Indented); context.Response.Write(json); } if (type == "3") //層級數據 { List<Student> list = new List<Student>(); for (int i = 0; i < 6; i++) { Student a = new Student(); a.id = "no" + i; a.name = "張三" + i; a.age = "21"; Dictionary<string, string> dic = new Dictionary<string, string>(); dic.Add("語文","80"); dic.Add("數學", "81"); dic.Add("英語", "83"); dic.Add("生物", "89"); dic.Add("化學", "90"); dic.Add("物理", "95"); a.score = dic; list.Add(a); } string json = JsonConvert.SerializeObject(list, Formatting.Indented); context.Response.Write(json); } } public struct Student { public string id; public string name; public string age; public Dictionary<string,string> score; } public bool IsReusable { get { return false; } }}更多關于jQuery相關內容感興趣的讀者可查看本站專題：《jquery中Ajax用法總結》、《jQuery表格(table)操作技巧匯總》、《jQuery拖拽特效與技巧總結》、《jQuery擴展技巧總結》、《jQuery常見經典特效匯總》、《jQuery動畫與特效用法總結》、《jquery選擇器用法總結》及《jQuery常用插件及用法總結》
希望本文所述對大家jQuery程序設計有所幫助。
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