class Animal { constructor (name, age, isMammal){ this.name = name; this.age = age; this.isMammal= isMammal; } } class Rabbit extends Animal { constructor (name, age,isMammal){ super(name, age); this.isMammal = true; } eat(){ return `${this.name} sedang makan!`; } } class Eagle extends Animal { constructor (name, age, isMammal){ super(name, age); this.isMammal = false; } fly(){ return `${this.name} sedang terbang!`; } } const myRabbit = new Rabbit("Labi", 2); const myEagle = new Eagle("Elo", 4);