javascript - 从 API 响应迭代嵌套的 Javascript 对象

Question

我已经尝试了 100 种不同的方法，并花了几天时间查看 Google 和 Stackoverflow，但我找不到解决这个问题的方法。我在此 API 响应主体之后调用的所有内容都返回 undefined!

Facebook SDK 的响应如下所示:

[
    {
        "body": "[   
            "data": [
                {
                    "name": "Larry Syid Wright",
                    "administrator": false,
                    "id": "xxx"
                },      {         
                    "name": "Melissa Long Jackson",
                    "administrator": false,
                    "id": "xxx"
                },      {       
                    "name": "Charlotte Masson",
                    "administrator": false,
                    "id": "xxx"  
                }  
            ],   
            "paging": {      
                "next": "url"
            }
        ]"
    },{
        "body": "{   
            "data": [      
                {         
                    "id": "xxx_xxx",       
                    "message": "In honor of Halloween, how many of you have your own ghost stories?  Who believes in ghosts and who doesn't?",                 
                    "type": "status",         
                    "created_time": "2014-10-31T20:02:01+0000",         
                    "updated_time": "2014-11-01T02:52:51+0000",         
                    "likes": {            
                        "data": [               
                            {                  
                                "id": "xxx",                  
                                "name": "Joe HerBatman Owenby Jr." 
                            }          
                        ],            
                    }
                    "paging": {               
                        "cursors": 
                            {                  
                                "after": "xxx",                  
                                "before": "xxx"               
                            }            
                        }         
                    }
                },{         
                    "id": "xxx_xxx",         
                    "from": {            
                        "id": "xxx",            
                        "name": "Jessica Starling"         
                    },       
                    "message": "Watching the "Campaign" and I can't help but notice what a fantastic job they did (Will ferrell and all) with that North Carolina accent! Ya'll know we sound different than other southern states ;)",         
                    "type": "status",           
                    "created_time": "2014-11-01T02:36:21+0000",         
                    "updated_time": "2014-11-01T02:36:21+0000",         
                    "likes": {            
                        "data": [               
                            {                  
                                "id": "xxx",                  
                                "name": "Scott Williams"n               
                            }         
                        ]
                    }      
                }      
            ],   
            "paging": {      
                "previous": "xxx",      
                "next": "xxx"  
            }
        }"
    }
]

此响应来自批处理调用。如果我分别调用它们，我可以轻松地遍历响应，并从中获取所有内容。但是，当我批量调用它们时，我无法通过“body”，我需要使用批量调用。

console.log(response[0].body); 将返回响应第一部分的 body 内的对象，但 console. log(response[0].body.data); 返回 undefined。我只是不明白。这应该很简单，但就像门上有锁，但我没有正确的 key 。

我通常在遍历对象时没有问题，所以我不需要一个通用的答案。我需要帮助才能看到我在这里看不到的任何东西。为什么当我在 body 之后调用任何内容时控制台显示 undefined，我需要做什么才能获得这些值？

Answer 1

该 JSON 包含嵌套的 JSON。 body 似乎是一根绳子。使用

var body = JSON.parse(response[0].body);