Test

test.js

class Animal {
  constructor(name) {
    this.name = name;
  }
  getName() {
    return this.name;
  }
}

class Dog extends Animal {
  constructor(name) {
    super(name);
  }
  bark() {
    return `Dog ${this.name} is barking`;
  }
}

var dog = new Dog ('Aban');

console.log(dog.getName() === 'Aban');

console.log(dog.bark() === 'Dog Aban is barking');