JavaScript #ES6 Class

class Animal {
  constructor(type, name, sound) {
    this.type = type;
    this.name = name;
    this.sound = sound;
  }
  say() {
    console.log(this.sound);
  }
}
//상속
class Dog extends Animal {
  constructor(name, sound) {
    super("개", name, sound);
  }
}
class Cat extends Animal {
  constructor(name, sound) {
    super("고양이", name, sound);
  }
}
const dog = new Dog("멍멍이", "멍멍");
const cat = new Cat("야옹이", "야옹");
const cats = new Cat("고양이들", "야오오오오오옹");

dog.say();
cat.say();
cats.say();

class Food {
  constructor(name) {
    this.name = name;
    this.brands = [];
  }
  addBrand(brand) {
    this.brands.push(brand);
  }
  print() {
    console.log(`${this.name}을/를 파는 음식점들:`);
    console.log(this.brands.join(", "));
  }
}

const pizza = new Food("피자");
pizza.addBrand("피자헛");
pizza.addBrand("도미노피자");

const chicken = new Food("치킨");
chicken.addBrand("굽네치킨");
chicken.addBrand("동네앞치킨");

pizza.print();
chicken.print();