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(value){
    this._isCheckedOut = value;
  }
   toggleCheckOutStatus(){
    if(this._isCheckedOut === false){
      this._isCheckedOut = true;
    }else {
      this._isCheckedOut = false;
    }
  }
   getAverageRating(){
     const avgRating = this.ratings.reduce((acc,curVal)=>{
       return Math.floor(acc + curVal / this.ratings.length);
     })
     return avgRating;
   }
  addRating(num){
    this._ratings.push(num);
  }
};
class Book extends Media{
  constructor(title,author,pages){
    super(title);
    this._author = author;
    this._pages = pages;
  }
  get author(){
    return this._author;
  }
  get pages(){
    return this._pages;
  }
};
class Movie extends Media{
  constructor(title,director,runtime){
    super(title);
    this._director = director;
    this._runtime = runtime;
  }
  get director(){
    return this._director;
  }
  get runtime(){
    return this._runtime;
  }
};
class CD extends Media{
  constructor(title,artist,songs){
    super(title);
    this._artist = artist;
    this._songs = songs;
  }
  get artist(){
    return this._artist;
  }
  get songs(){
    return this._songs;
  }
}
const historyOfEverything = new Book('A Short History of Nearly Everything', 'Bill Bryson', 544);
historyOfEverything.toggleCheckOutStatus();
console.log(historyOfEverything.isCheckedOut);
historyOfEverything.addRating(4);
historyOfEverything.addRating(5);
historyOfEverything.addRating(5);
console.log(historyOfEverything.ratings);
console.log(historyOfEverything.getAverageRating());
const speed = new Movie ('Speed', 'Jan de Bont', 116);
speed.toggleCheckOutStatus();
console.log(speed.isCheckedOut);
speed.addRating(1);
speed.addRating(1);
speed.addRating(5);
console.log(speed.ratings)
console.log(speed.getAverageRating())