Method Overriding

In TypeScript, method overriding is a mechanism where a subclass provides a new implementation for a method that is already defined in its parent class. This allows the subclass to inherit the behavior of the parent class, but change its behavior to fit its own needs.

To override a method in TypeScript, you need to use the override keyword, and the signature of the method in the subclass must match exactly with the signature of the method in the parent class.

class Animal {
  makeSound(): void {
    console.log('Making animal sound');
  }
}

class Dog extends Animal {
  makeSound(): void {
    console.log('Bark');
  }
}

let animal: Animal;

animal = new Dog();
animal.makeSound(); // Output: Bark

In this example, the Dog class overrides the makeSound method defined in the Animal class and provides its own implementation. When the makeSound method is called on an instance of the Dog class, it will use the implementation in the Dog class rather than the implementation in the Animal class.

Learn more from the following resources:

• TypeScript - Overriding Methods