// common functions are combined in a class to have less repetition in code

class Animals { // Animal class is created where the legs are defined 4

constructor () {

this.legs = 4;

}

getLegs () { // Function for getting legs

return (this.legs);

}

}

class Dog extends Animals {

constructor (age) {

super(); // As We have to also call the constructor of Animals if constructor is empty this automatically calls the super

this.age = age;

}

// we have inherited the animals so getLegs method is also there in Dog class

getSound () {

return ("Bhow");

}

getAge () {

return (this.age);

}

}

const tommy = new Dog(10); // Created Object of Dog class

console.log(tommy.getLegs()); // Output 4

console.log(tommy.getSound()); // Bhow

console.log(tommy.getAge()); // 10