Get started with inheritance-js CDN

// Include the inheritance library
const inherit = require("inherit");

// Define the base class
class Animal {
  constructor(name) {
    this.name = name;
  }

  speak() {
    console.log(`${this.name} makes a sound.`);
  }
}

// Define the derived class
class Dog extends inherit(Animal) {
  constructor(name, breed) {
    super(name);
    this.breed = breed;
  }

  bark() {
    console.log(`${this.name} barks.`);
  }
}

// Create instances of the classes
const myDog = new Dog("Fido", "Labrador");

// Call methods on the instance
myDog.speak(); // "Fido makes a sound."
myDog.bark(); // "Fido barks."