How to merge two array value with Javascript? : I looking for some answers , i just find `concat()`

It will become `['A', 'B', 'C', 'a', 'b', 'c']` that is not what i want.

var one = ['A', 'B', 'C'];

var two = ['a', 'b', 'c'];

I want it becomes to this:

    var three = ['Aa', 'Bb', 'Cc'];

How would i do this ?  Thanks in advance.