ObjFactory

factory.js

class ObjFactory {
  constructor(author) {
    this.author = author;
  }

  createCar(model) {
    return new Car(this.author, model);
  }

  createHuman(name) {
    return new Human(this.author, name);
  }

  createBook(title) {
    return new Book(this.author, title);
  }
}

class Car {
  constructor(author, model) {
    this.type = 'Car';
    this.author = author;
    this.model = model;
    console.log(this);
  }
}

class Human {
  constructor(author, name) {
    this.type = 'Human';
    this.author = author;
    this.name = name;
    console.log(this);
  }
}

class Book {
  constructor(author, title) {
    this.type = 'Book';
    this.author = author;
    this.title = title;
    console.log(this);
  }
}

var factory = new ObjFactory('kulakowka');

var car1 = factory.createCar('nissan 350z');
var car2 = factory.createCar('mazda 3');
var human1 = factory.createHuman('Vladimir Putin');
var human2 = factory.createHuman('Dmitry Medvedev');
var book1 = factory.createBook('War and peace');
var book2 = factory.createBook('Js for dummy');

/**
{ type: 'Car', author: 'kulakowka', model: 'nissan 350z' }
{ type: 'Car', author: 'kulakowka', model: 'mazda 3' }
{ type: 'Human', author: 'kulakowka', name: 'Vladimir Putin' }
{ type: 'Human', author: 'kulakowka', name: 'Dmitry Medvedev' }
{ type: 'Book', author: 'kulakowka', title: 'War and peace' }
{ type: 'Book', author: 'kulakowka', title: 'Js for dummy' }
*/