underline group通过迭代结果

Question

我有一个对象数组，我使用groupBy来获得以下结果。

{ 'Cloud Revenue': 
[ { sessionName: 'Business Growth',
channelName: 'Cloud Revenue',
channelId: '19:[e-mail]2',
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，在上面的例子中，我需要提取顶级属性名称(Cloud Revenue和General(，并将其分配给一个字符串变量。我试着使用foreach、_.map和_.each，但没有任何东西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:[e-mail]2',
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);
}