Listening for variable changes in JavaScript

Question

Is it possible to have an event in JS that fires when the value of a certain variable changes? JQuery is accepted.

Answer 1

In my case, I was trying to find out if any library I was including in my project was redefining my window.player. So, at the begining of my code, I just did:

Object.defineProperty(window, 'player', {
  get: () => this._player,
  set: v => {
    console.log('window.player has been redefined!');
    this._player = v;
  }
});