Codecademy export

app.js

class Media {
  constructor(title) {
    this._title = title;
    this._isCheckedOut = false;
    this._ratings = [];
  }
  get title() {
    return this._title;
  }
  get isCheckedOut() {
    return this._isCheckedOut;
  }
  get ratings() {
    return this._ratings;
  }
  set isCheckedOut(newIsCheckedOut) {
    this._isCheckedOut = newIsCheckedOut;
  }
  
  toggleCheckOutStatus() {
    this.isCheckedOut = !this.isCheckedOut;
  }
  getAverageRating() {
   let ratingSum = this.ratings.reduce((accumulator, rating) => accumulator + rating);
   return ratingSum / this.rating.length;
  }
  addRating(value) {
    this.rating.push(value);
  }
}
/*
class Book extends Media () {
  constructor(author, title, pages) {
    super(title)
    this._author = author;
    this._pages = pages;
  }
  get author() {
    return this._author;
  }
  get pages() {
    return this._pages;
  }
}
*/
class Movie extends Media() {

  constructor (director, title, runTime) {
    super(title); 
    this._director = director;
    this._runTime = runTime;
  }
  get director() {
    return this._director;
  }
  get runTime() {
    return this._runTime;
  }
}

const historyOfEverything = new Book('Bill Bryson', 'A Short History of Nearly Everything', 544);
historyOfEverything.toggleCheckOutStatus()
console.log(historyOfEverything.isCheckedOut)
historyOfEverything.addRating(4)
historyOfEverything.addRating(5)
historyOfEverything.addRating(5)
console.log(historyOfEverything.getAverageRating())


const speed = new Movie ('Jan de Bont', 'Speed', 116);
speed.toggleCheckOutStatus()
console.log(speed.isCheckedOut)
speed.addRating(1)
speed.addRating(1)
speed.addRating(5)
console.log(speed.getAverageRating())


/*
class new CD extends Media () {
  constructor(artist, title, songs) {
    super(title) 
    this._artist = artist;
    this._songs = songs;
  }
  get artist() {
    return this._artist;
  }
  get songs() {
    return this._songs;
  }
}

*/