In the past, to create a public class field we would have used this syntax, instantiating the field in the constructor:

class Counter {
  constructor() {
    this.count = 0
  }
}

The new class fields proposal, which you can use since Chrome 72 and Node 12, allows us to use this syntax:

class Counter {
  count = 0
}

Much simpler!


Download my free JavaScript book!

But.. wait! Don't stop here.

I created a premium training program that will transform you, quickly, into an excellent JavaScript developer. Practical lessons to learn the 80% of the JavaScript that you need, in 20% of the time!

⬇️ ⬇️ ⬇️

Sign up to the JavaScript Course now!

⬆️ ⬆️ ⬆️