How to write JavaScript with factory functions

Question

I\'m reading this article about perils of trying to mimic OOP in JavaScript and there\'s the following:

In JavaScript, factory functions are simply co

Answer 1

I don't like these answers because they use the this keyword. You can avoid this altogether and still use a factory function like this:

function createRabbit() {
    var speed = 3;
    return {
        getSpeed: function() {
            return speed;
        }
    }
}

var rabbit = createRabbit();
console.log(rabbit.getSpeed());

This guy has a good article about it: http://radar.oreilly.com/2014/03/javascript-without-the-this.html