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){
      isCheckedOut(true);
    } else if (this.isCheckedOut === true){
      isCheckedOut(false);
    }
  }

  getAverageRating(){
    let ratingsSum = this._ratings.reduce((currentSum, rating) => currentSum + rating, 0);
    const lengthRatings = this.ratings.length;
    return ratingsSum/lengthRatings;
  }

  addRating(rate){
    this._ratings.push(rate);
  }
};

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 = director;
  }
  get runTime(){
    return this._runTime;
  }
};

const historyOfEverything = new Book('A Short History of Nearly Everything','Bill Bryson',544);

console.log(historyOfEverything);

historyOfEverything.toggleCheckOutStatus();