迭代node.js中Objects中的值

Question

我只想迭代对象中的值。场景就像这样！

roomsObject[socket.nickname]={"roomN":users[socket.nickname].roomName
                             ,"Clients":['A','B','C']};

其中roomsObject是一个对象，我想遍历客户端。

 function updateRoomList(groupO,callback)
{
    roomParticularGroupList=[];
    for(var key in roomsObject)
    //this iterates through socket.nickname but i want to iterate through  roomsObject[socket.nickname].clients so that i get list of clients and send it back through callback  
    roomParticularGroupList.push(roomsObject[socket.nickname].clients);
    }
    console.log(roomParticularGroupList);
    callback(roomParticularGroupList);

}

Answer 1

for (var key in roomsObject)
    roomParticularGroupList.push(roomsObject[socket.nickname].clients);
}

此处没有socket个nickname属性，您在循环中枚举 key s ，您必须使用它。此外，您已小写clients。它应该是

for (var key in roomsObject)
    roomParticularGroupList.push(roomsObject[key].Clients);
}

顺便说一下，这里几乎没有理由使用回调。只需return roomParticularGroupList。