I'm trying to implement a vector object instantiated like below...

var a = new Vector([1,2,3]);

var b = new Vector ([2,2,2]);

...and when I do a math operation I need something like this...

a.add(b); // should return Vector([3,4,5])

...but my code below returns me just an array

function Vector(components) {

  // TODO: Finish the Vector class.

  this.arr = components;

  this.add = add;

}



function add(aa) {

  if(this.arr.length === aa.arr.length) {

    var result=[];

    for(var i=0; i<this.arr.length; i++) {

       result.push(this.arr[i]+aa.arr[i]);

    }

    return result;

  } else {

    return error;

  }

}

Please help me out here. Thank you!