What are abstract classes in JavaScript?

What are abstract classes in JavaScript?

Abstract classes in JavaScript are classes that cannot be instantiated directly and are meant to be subclassed.

How do I create an abstract class in JavaScript?

You can create an abstract class by defining a class and using methods that throw errors if not overridden in subclasses.

Can you give me an example of an abstract class?

Sure! Here's a simple example:

class Animal {
    constructor(name) {
        this.name = name;
    }
    makeSound() {
        throw new Error('Method not implemented!');
    }
}

class Dog extends Animal {
    makeSound() {
        return 'Woof!';
    }
}

In this example, Animal is an abstract class.

What happens if I try to instantiate an abstract class?

If you try to instantiate an abstract class directly, you'll get an error when you call an abstract method that hasn't been implemented.