请参阅以下代码:
Collection:
[
{
_id: 'abc',
UserName: 'aaaa',
Password: 'xxxx',
Friends:
[
{
FriendId: 'bbb',
Confirm: 1
},
{
FriendId: 'ccc'
Confirm: 0
}
]
},
{
_id: 'cdk',
UserName: 'bbbbbbbb',
Password: 'xxxxzz',
Friends:
[
{
FriendId: 'bbb',
Confirm: 1
},
{
FriendId: 'aaa'
Confirm: 0
}
]
}
]
我想加{ Friend: 'ddd', Confirm: 0 }
进去item _id: 'abc'
。