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

Many answers here suggest Constructor Functions, although the name of the questions has to do with Factory Functions.

Factory Functions look like the following:

const RabbitFactory = () => {
  const speed = 3;
  const GetSpeed = () => speed;
  return { GetSpeed }
}
const rabbit = RabbitFactory();
rabbit.GetSpeed() // -> 3
rabbit.speed // -> undefined!

I like Factory functions more than Constructor function because:

• You don't need to get messy with prototyping
• You don't need to use the Object constructor
• Gives you the ability to choose what is private and what is public in your factory
  (in my example, speed is private and this is a good practice. If you want to read the value of rabbit's speed, use the GetSpeed getter)