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

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); 

Answer 2

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());