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MVC中处理Json和JS中处理Json对象
事实上，MVC中已经很好的封装了Json，让我们很方便的进行操作，而不像JS中那么复杂了。
MVC中：
public JsonResult Test()         {             JsonResult json = new JsonResult                                  {                                      Data = new                                                 {                                                     Name = "zzl",                                                     Sex = "male",                                                 }                                  };             return Json(json);         }         public JsonResult TestList()         {             List<User> userList = new List<User>             {               new User{Name="zzl",Email="bfyxzls@sina.com"},               new User{Name="zhz",Email="zhanghangzheng@sina.com"},             };             JsonResult json = new JsonResult                                  {                                      Data = userList                                  };             return Json(json);             //return Json(json, JsonRequestBehavior.AllowGet);//前台AJAX如果是GET用这句                        //什么时候用GET请求呢，当我们直接在浏览器中输入网址时，其实就是一个GET请求                        //如果我们直接输入/Home/TestList这个网址，它会提示我们下载这个JSON格式的文档         }
前台调用
<script>     $.ajax({         url: "/Home/Test",         dataType: "json",         cache: false,         data: null,         type: "POST",         success: function (data) {             alert(data.Data.Name);         }     });     $.ajax({         url: "/Home/TestList",         dataType: "json",         cache: false,         data: null,         type: "POST",         success: function (data) {             var msg = "";             for (var i = 0, length = data.Data.length; i < length; i++) {                 msg += "<DiV>Name:" + data.Data[i].Name + ",Email:" +                 data.Data[i].Email + "</div>";             }             $("#msg2").html(msg);         }     }); </script>
第二种列表的方法，也可以这样来实现更加简单：
  public JsonResult TestList()         {             List<User> userList = new List<User>             {               new User{Name="zzl",Email="bfyxzls@sina.com"},               new User{Name="zhz",Email="zhanghangzheng@sina.com"},               new User{Name="zql",Email="zql1980.happy@sina.com"},             };             return Json(userList);                        //return Json(userList, JsonRequestBehavior.AllowGet);//前台AJAX如果是GET用这句         } $.ajax({         url: "/Home/TestList",         dataType: "json",         cache: false,         data: null,         type: "POST",         success: function (data) {             var msg = "<table border=1><thead><tr><td>Name</td><td>Email</td>                        </tr></thead><tbody>";             for (var i = 0, length = data.length; i < length; i++) {                 msg += "<tr><td>" + data[i].Name + "</td><td>"                     + data[i].Email + "</td></tr>";             }             msg += "<script type='text/javascript'> //<![CDATA[ if (document.getElementById('processtime')) document.getElementById('processtime').innerHTML="<span class='runtimedisplay'>Run in 125 ms, 12 Queries, Gzip enabled.</span>"; //]]> </script></body></table>";             $("#msg2").html(msg);         }     }); 注意看 data.length的部分，是否是更简单了呢！哈哈 纯JS进行操作：      var arr = [{ "name": "zzl", "sex": "男" }, { "name": "lr", "sex": "女"}];         for (var i = 0; i < arr.length;i++ ) {             document.write(arr[i].name);         }
原文出处：http://www.cnblogs.com/lori/archive/2011/08/25/2153479.html刚写作者的辛勤劳动！