taenyLog

class pet { constructor(name, age) { this.name = name; this.age = age; } eat() { return `${this.name} is eating`; } } class cat extends pet { meow() { return "mEWOOOOE"; } eat() { return `${this.name} cat eating food`; } } class dog extends pet { constructor(name, age, livesLeft = 10) { super(name, age); this.livesLeft = livesLeft; } bark() { return "VARKRKRRKK"; } } super 키워드가 super 클래스의 참조 항목이..