Classes and Inheritance

Here’s an example demonstrating class creation and inheritance:

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

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

class Dog extends Animal {
  speak() {
    console.log(`${this.name} barks.`);
  }
}

const dog = new Dog("Buddy");
dog.speak(); // Output: Buddy barks.
          

This code demonstrates:

• Creating a base class Animal.
• Extending the base class with Dog.
• Overriding methods using inheritance.
• Using super to refer to the parent class constructor or methods.

JavaScript classes are templates for creating objects. They encapsulate data with code to work on that data.

• Class: Defined using the class keyword. Contains a constructor and methods.
• Constructor: A special method for initializing new instances.
• Inheritance: Achieved using the extends keyword to create a subclass.
• super(): Used to call the parent class's constructor or methods.

This approach simplifies the use of object-oriented programming in JavaScript by abstracting prototype chains and improving code readability and reusability.

• Modeling real-world entities using objects and classes.
• Building scalable front-end architecture in frameworks like React.
• Developing reusable UI components and patterns.
• Creating modular game engines or simulations.
• Enhancing code organization and readability in large applications.