What are the differences between classes and functions in JavaScript?

What are the main differences between classes and functions in JavaScript?

Classes in JavaScript are syntactical sugar over constructor functions. They provide a clearer structure for creating objects and support inheritance through the extends keyword. Functions, on the other hand, are more flexible and can be used as first-class citizens, meaning they can be passed around and invoked in various ways.

Can you explain how inheritance works with classes?

Sure! Inheritance in classes allows one class to inherit properties and methods from another class. You can create a subclass using the extends keyword, which allows the subclass to access the parent class's methods and properties, promoting code reuse.

Are there any performance differences between using classes and functions?

Generally, there isn't a significant performance difference between classes and functions in JavaScript. However, classes can lead to more organized and maintainable code, especially in larger applications. The choice often depends on the specific use case and coding style.

When should I use a class instead of a function?

You should consider using a class when you need to create multiple instances of an object with shared methods and properties, especially when you want to leverage inheritance. Functions are great for simpler, standalone operations.