從webhook解析json

Question

我正在嘗試設置與Quickbooks的webhook和測試我使用JSON的示例，他們將發佈到webhook。

的JSON的格式如下：

{ 
    "eventNotifications":[ 
    { 
     "realmId":"1185883450", 
     "dataChangeEvent": 
     { 
      "entities":[ 
      { 
       "name":"Customer", 
       "id":"1", 
       "operation":"Create", 
       "lastUpdated":"2015-10-05T14:42:19-0700" 
      }, 
      { 
       "name":"Vendor", 
       "id":"1", 
       "operation":"Create", 
       "lastUpdated":"2015-10-05T14:42:19-0700" 
      }] 
     } 
    }] 
} 

使用JavaScript，我試圖解析它一對夫婦的方式，但我一直陷在實體部分。

嘗試1： 有了這個嘗試，我得到一個錯誤，說明長度未定義，這導致我嘗試下一次嘗試。

for (var i = 0; i < req.body.eventNotifications.length; i++) { 

    // Works fine 
    realmId.push(req.body.eventNotifications[i].realmId); 

    for (var j = 0; j < req.body.eventNotifications[i].dataChangeEvent.entities.length; j++) { 
     // length is undefined 
    } 
} 

嘗試2： 我沒有得到錯誤如上，但任何事情我嘗試訪問下面的實體是不確定的。

for (var i = 0; i < req.body.eventNotifications.length; i++) { 

    // Works fine 
    realmId.push(req.body.eventNotifications[i].realmId); 

    for (var j = 0; j < req.body.eventNotifications[i].dataChangeEvent.length; j++) { 
     // Anything I try to access is undefined 
     var test = req.body.eventNotifications[i].dataChangeEvent[j].entities.name; 
    } 
} 

Answer 1

for (var i = 0; i < req.body.eventNotifications.length; i++) { 

    // Works fine 
    realmId.push(req.body.eventNotifications[i].realmId); 

    var eventNotification = req.body.eventNotifications[i]; 

    for (var j = 0; j < eventNotification.dataChangeEvent.entities.length; j++) { 
     var entityName = eventNotification.dataChangeEvent.entities[j].name; 
    } 
}