What are interfaces in JavaScript?

What are interfaces in JavaScript?

In JavaScript, interfaces are not a built-in feature like in some other languages. However, they can be simulated using objects and classes to define a contract for what methods and properties an object should have.

Can you give me an example of how to create an interface?

Sure! You can create an interface-like structure using a class. For example:

class Animal {
    speak() {}
}

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

const dog = new Dog();
dog.speak(); // Outputs: Woof!

What are the benefits of using interfaces?

Using interfaces helps in defining clear contracts for your objects, promotes code reusability, and enhances maintainability by ensuring that different parts of your code adhere to the same structure.

Are there any limitations to using interfaces in JavaScript?

Yes, since JavaScript doesn't have built-in support for interfaces, it relies on conventions. This can lead to less strict enforcement of the interface contract compared to languages with native interface support.