Codecademy export

app.js

//已完成第1-3
const menu = {
  _courses:{
    appetizers:[],
    mains:[],
    desserts:[]
  },
//第4步不明白  不让人修改属性
  get appetizers () {
    return this._courses.appetizers; 
  },
  get mains () {
    return this._courses.mains; 
  },
  get desserts () {
    return this._courses.desserts; 
  }, 
  set appetizers (appetizers) {
    this._courses.appetizers = appetizers
  },
  set mains (mains) {
    this._courses.mains = mains
  },
  set desserts (desserts) {
    this._courses.desserts = desserts
  },


//完成第5-6步 目的是返回3个值
  get courses() {
    return {
      appetizers: this.appetizers,
      mains: this.mains,
      desserts:this.desserts}
  },
//第7-8步 
  addDishToCourse (courseName,dishName,dishPrice) {
     const dish = {
       Name:dishName,
       price:dishPrice, 
     };
     return this._courses[courseName].push(dish);
  },
  
//已明白 第9-10步  
  getRandomDishFromCourse(courseName) {
    const dishes = this._courses[courseName];
    const randomIndex = Math.floor(Math.random() * dishes.length);  
    return dishes[randomIndex];  
  },
  generateRandomMeal () {
    const appetizer 
    = this.getRandomDishFromCourse('appetizers');
    const main = this.getRandomDishFromCourse('mains');
    const dessert = this.getRandomDishFromCourse('desserts');
    const totalPrice = appetizer.price + main.price + dessert.price;
    return `Your meal is ${appetizer.name},${main.name}, and ${dessert.name}, and total price is ${totalPrice}`;  
    
  }
};
// 到此为止有方法获得随机的dish.

menu.addDishToCourse('appetizers','salad', 5.00);
menu.addDishToCourse('appetizers','soup', 6.00);
menu.addDishToCourse('appetizers','wings', 5.00);

menu.addDishToCourse('mains','curry chicken', 10.00);
menu.addDishToCourse('mains','fired nuudles', 11.00);
menu.addDishToCourse('mains','fried rices', 11.00);

menu.addDishToCourse('desserts','ice cream', 5.00);
menu.addDishToCourse('desserts','coffee', 3.00);
menu.addDishToCourse('desserts','kaakao', 4.00);

const meal = menu.generateRandomMeal();
console.log(meal);