How to listen for value changes from class property TypeScript - Angular

Question

In AngularJS, we can listen variable change using $watch, $digest... which is no longer possible with the new versions of Angular (5, 6).

I

Answer 1

as said you can use

public set myProperty_2(value: type): void {
 if(value) {
  //doMyCheck
 }

 this._myProperty_2 = value;
}

and then if you need to retrieve it

public get myProperty_2(): type {
  return this._myProperty_2;
}

in that way you can do all the checks that you want while setting/ getting your variables such this methods will fire every time you set/get the myProperty_2 property.

small demo: https://stackblitz.com/edit/angular-n72qlu