JSFiddle - React, Tailwind, and code Playground

JavaScript

class Konst {
  constructor() {
    this.color = 'red';
  }
  func() {
    console.log(this.color);
  }
  funcTimeout() {
    setTimeout(() => this.func(), 2000);
  }
}
const j = new Konst();

j.color = 'huj';
j.funcTimeout();