underscore groupBy 迭代结果

Question

我有一个对象数组，我使用 groupBy 获得了以下结果。

{ 'Cloud Revenue': 
   [ { sessionName: 'Business Growth',
       channelName: 'Cloud Revenue',
       channelId: '19:8f128db81595434cb91359e5ebb5a58f@thread.tacv2',
       startDate: '2020-04-12',
       endDate: '2020-04-12',
       startTime: '08:00:00.0000000',
       endTime: '08:30:00.0000000' },
     { sessionName: 'Increase Market Value',
       channelName: 'Cloud Revenue',
       startDate: '2020-04-12',
       endDate: '2020-04-12',
       startTime: '06:30:00.0000000',
       endTime: '07:00:00.0000000' } ],
  General:
   [ { sessionName: 'Value Proposition',
       channelName: 'General',
       startDate: '2020-04-12',
       endDate: '2020-04-12',
       startTime: '07:30:00.0000000',
       endTime: '08:00:00.0000000' } ] }

现在，我需要按键枚举实体。例如，在上述情况下，我需要提取顶级属性名称（Cloud Revenue 和 General）并将其分配给字符串变量。我尝试使用 foreach、_.map 和 _.each，没有什么能为我提供顶级属性字符串。我怎样才能做到这一点？

Answer 1

var obj= { 'Cloud Revenue': 
   [ { sessionName: 'Business Growth',
       channelName: 'Cloud Revenue',
       channelId: '19:8f128db81595434cb91359e5ebb5a58f@thread.tacv2',
       startDate: '2020-04-12',
       endDate: '2020-04-12',
       startTime: '08:00:00.0000000',
       endTime: '08:30:00.0000000' },
     { sessionName: 'Increase Market Value',
       channelName: 'Cloud Revenue',
       startDate: '2020-04-12',
       endDate: '2020-04-12',
       startTime: '06:30:00.0000000',
       endTime: '07:00:00.0000000' } ],
   General:
         [ { sessionName: 'Value Proposition',
         channelName: 'General',
        startDate: '2020-04-12',
        endDate: '2020-04-12',
        startTime: '07:30:00.0000000',
         endTime: '08:00:00.0000000' } ] }

for(keys in obj){
   console.log(keys);
}

underscore groupBy 迭代结果

underscore groupBy iterating the result

javascript

arrays

underscore.js