Implementing private instance variables in Javascript

Question

I don\'t know how I\'ve missed this for so long. I\'ve been presuming private instance variables to work like this, but they don\'t. They\'re private (as in non-global), cer

Answer 1

If you are willing to use ES2015 classes (I already answered it here, but repeating for the sake of convenience),

with ESNext, you can use Javascript private variables like this:

class Foo {
  #bar = '';
  constructor(val){
      this.#bar = val;
  }
  otherFn(){
      console.log(this.#bar);
  }
}

Private field #bar is not accessible outside Foo class.