Union of Array of Objects in JavaScript?

Question

So after searching the interwebz for a few hours I have not found the solution I am looking for.

I have two arrays that contain game objects with a lot of informatio

Answer 1

Here is better solution

function arrayUnion() {
    var args = Array.prototype.slice.call(arguments);
    var it = args.pop();

    return _.uniq(_.flatten(args, true), it);
}

var a = [{id: 0}, {id: 1}, {id: 2}];
var b = [{id: 2}, {id: 3}];
var c = [{id: 0}, {id: 1}, {id: 2}];

var result = arrayUnion(a, b, c, function (item) {
    return item.id;
});

console.log(result);