Javascript 更改对象数组中所有项目的属性

Question

I'm pretty depressed because of this crazy problem. I have a difficult data structure composed of objects and arrays. It looks like this:

Team{
    name: "name_of_team",
    players: [

        // PLAYER 1
        {
            id: 0,
            position: 0,
            track:[

                // POINT 1
                {
                    time: 0,
                    checked: false
                },

                // POINT 2
                {
                    time: 0,
                    checked: false
                },

                // POINT 3
                {
                    time: 0,
                    checked: false
                }
            ]
        },

        // PLAYER 2
        {
            id: 1,
            position: 0,
            track:[

                // POINT 1
                {
                    time: 0,
                    checked: false
                },

                // POINT 2
                {
                    time: 0,
                    checked: false
                },

                // POINT 3
                {
                    time: 0,
                    checked: false
                }
            ]
        }
    ]
}

So I can track players. When one from team gets to point, its parameter checked changes to true and time saves the time of getting this zone. My function looks like this:

var a = Team.players.findIndex(x => x.id === 0);
var position = Team.players[a].position;
Team.players[a].track[position].checked = true;
Team.players[a].track[position].time = new Date();
Team.players[a].position++;

When I check parameter "a" it's set to 0 (right value) and it all seems good. But "checked" and "time" parameter changes also in the second object (id == 1) in this array. Crazy thing is that "position" parameter is correctly incremented only in the right object (id == 0). I tried to hard index the item in array like:

Team.players[0].track...

But it behaves the same. Has anyone experienced something like this or any ideas how to avoid second object being modified together with first object.

Thanks for any suggestions.

Answer 1

Assuming

Team.players[a].position

is the position, then just use it.

var a = Team.players.findIndex(x => x.id === 0);
Team.players[a].track[Team.players[a].position].checked = true;
//                    ^^^^^^^^^^^^^^^^^^^^^^^^
Team.players[a].track[Team.players[a].position].time = new Date();
//                    ^^^^^^^^^^^^^^^^^^^^^^^^
Team.players[a].position++;