使用多维数组JavaScript处理Web服务响应

Question

我正在使用具有多维数组的Web服务作为响应，当我警告元素时会得到未定义的输出，请参见下面的代码。

JSON响应

{  
   "status":1,
   "msg":"cc call history",
   "records":{  
      "1":{  
         "destination":"Canada - Fixed Others",
         "date":"May 05, 2010",
         "time_spent":"1 minutes",
         "amount_charged":"2.18"
      },
      "2":{  
         "destination":"Canada - Fixed Others",
         "date":"May 05, 2010",
         "time_spent":"1 minutes",
         "amount_charged":"2.18"
      }
   }
}

JavaScript代码

function call()
        {
            alert('call');
            var user_id = sessionStorage.getItem('user_id');
            var authentication_key = sessionStorage.getItem('auth_id');
            alert(user_id);
            alert(authentication_key);
            $.ajax({
                type: 'GET',
                url: 'http://example.com/XXX',
                data: {user_id: user_id, authentication_key: authentication_key},
                success: function (response)
                {
                    obj = JSON.parse(response);
                    var status = obj.status;
                    var msg = obj.msg;
                    var records;

                    alert(status);
                    alert(msg);
                    alert(records);
                    if (status === '0')
                    {
                        alert(status);
                    }
                    else
                    {
                        var lnrc = obj.records.length;
                        alert(lnrc);
                        for (var i = 0; i < 2; i++)
                        {
                            alert('for');
                            var rc1 = obj.records[i];
                            alert(rc1);
                        }
                    }
                },
                error: function () {

                },
            });
        }

请提出一些建议。

Answer 1

您可以使用for-in循环遍历object 。 确保您获得的键是object的实际property

 var obj = { "status": 1, "msg": "cc call history", "records": { "1": { "destination": "Canada - Fixed Others", "date": "May 05, 2010", "time_spent": "1 minutes", "amount_charged": "2.18" }, "2": { "destination": "Canada - Fixed Others", "date": "May 05, 2010", "time_spent": "1 minutes", "amount_charged": "2.18" } } }; var status = obj.status; var msg = obj.msg; var records; if (status === '0') { alert(status); } else { for (var key in obj.records) { if (obj.records.hasOwnProperty(key)) { console.log(obj.records[key]); } } //OR Object.keys(obj.records).forEach(function(key) { console.log(obj.records[key]); }); }