035-Construction-function-Inheritance.js

/*
 Author : Jaydatt Patel

 Inherit constructor function.

 We can also use constructor function to create new derived constructor function same as base super class and sub or derived class. 
*/

console.log("---------------------1-----------------------");

function Vehicle(name, color, wheels) {
  this.name = name;
  this.color = color;
  this.wheels = wheels;
  this.showV = function () {
    console.log(this);
  };
}
Vehicle.prototype.getVeh = function () {
  console.log(
    `Name: ${this.name}, Color: ${this.color}, Wheels: ${this.wheels}`
  );
};

console.log(Object.create(Vehicle));

function Car(color, brand, seats) {
  Vehicle.call(this, "car", color, 4);
  this.brand = brand;
  this.seats = seats;
}

// copy all prototype which are inherited in base function
Object.setPrototypeOf(Car.prototype, Vehicle.prototype);
// Car.prototype = Vehicle.prototype;
// or  Car.prototype = Object.create(Vehicle.prototype);

//add seperate prototype
Car.prototype.getDetails = function () {
  console.log(
    `The ${this.color} ${this.name} is of ${this.brand} company. It has seating for ${this.seats} people`
  );
};

const car1 = new Car("Black", "Audi", 5);
console.log("car1 : ", car1);
console.log("car1.__proto__ :", car1.__proto__);
car1.getDetails(); // calling inherited method of derived function.
car1.getVeh(); // calling inherited method of base function

console.log("---------------------2-----------------------");

function Book(name, pages, price) {
  this.name = name;
  this.pages = pages;
  this.price = price;
  this.bookInfo = function () {
    console.log(
      `name: ${this.name}, pages: ${this.pages}, price: ${this.price}`
    );
  };
}

function Author(name, pages, price, authorName) {
  Book.call(this, name, pages, price); // calling function call
  this.authorName = authorName;
  this.authorInfo = function () {
    console.log(`authorName: ${this.authorName}`);
  };
}

function Motivation_Books(name, pages, price, authorName, details) {
  Book.call(this, name, pages, price); // calling function call
  Author.call(this, name, pages, price, authorName); // calling function call
  this.details = details;
  this.getInfo = function () {
    console.log(this);
  };
}

let book1 = new Motivation_Books(
  "XYZ",
  200,
  "1500 INR",
  "Mr.Author",
  "New Book For Moto"
);
book1.getInfo();
book1.bookInfo();
book1.authorInfo();