ios 拼接复杂json数据 json拼接动态数据

//json数组 

                             var arr = new Array(); 

                             for (var i = 0; i < data.length; i++) { 

                                 var info = { "openid": data[i], "lang": "zh-CN" }; 

                                 arr.push(info); 

                             } 

                             

                              

                             $.ajax({ 

                                 url: 'Wechat/UserInfo', 

                                

                                     data: { 

                                         "user_list": arr 

                                     }, 

                                     type: 'post', 



                                     success: function (res) { 

                                         alert(res); 

                                     }, 

                                     dataType:"json" 


                                 }); 

                             //}); 



                         }, 

                         dataType:'json' 
                    });

{
   "user_list": [
     {
       "openid": "o4KnWso0zSE6avbr6C-mJxDQ9Vyg",
       "lang": "zh-CN"
     },
     {
       "openid": "o4KnWstZyIyH9mfP56cRokDzI3c4",
       "lang": "zh-CN"
     },
     {
       "openid": "o4KnWsnUKSt0nUIrrYP0sbGPYCuA",
       "lang": "zh-CN"
     }
   ]
 }