Can I extend classes in ES6?

Can I extend classes in ES6?

Yes, you can extend classes in ES6 using the extends keyword. This allows you to create a subclass.

What is the syntax for extending a class?

The syntax is: class SubClass extends SuperClass { ... }. You define the subclass and specify the superclass.

Can you give me an example?

Sure! Here's a simple example:

class Animal {
  speak() {
    console.log('Animal speaks');
  }
}

class Dog extends Animal {
  speak() {
    console.log('Dog barks');
  }
}

In this example, Dog extends Animal.

What happens if I don't call super() in the subclass?

If you don't call super() in the constructor of the subclass, you'll get an error because the subclass needs to call the constructor of the superclass.