Object oriented JS

Question

Why it doesn't work? When I'm trying to call example.example() I'm getting TypeError: example.example is not a function.

var example = class {
constructor(){
    this.example = false;
}

id(){
    this.example = !this.example;
    return this.example;
}
};

Answer 1

You have created class so you need to make an object of this.It should work by calling like this.

var example = class {
constructor(){
    this.example = false;
}

id(){
    this.example = !this.example;
    return this.example;
}
};

console.log((new example()).id());
var obj = new example();
console.log(obj.id());

Answer 2

When I'm trying to call example.example() I'm getting TypeError: example.example is not a function.

example is a reference to an anonymous class, and its constructor can only be invoked with new

You need to call it as

var a = new example();
a.example; //false

Demo

var example = class {
  constructor() {
    this.example = false;
  }

  id() {
    this.example = !this.example;
    return this.example;
  }
};
var a = new example()

console.log(a.example);