Classes

Summary

Syntactic sugar over prototypal inheritance that gives JavaScript a familiar, class-based way to define constructors, methods and inheritance. Classes are useful for modeling objects with shared behavior, but understanding prototypes helps explain inheritance, method lookup, and JavaScript's object model.

• 1Write a class with a constructor, a method and a `static` method. Validate your understanding by applying it in a small practical example.
• 2Practice `extends` and `super()` for inheritance between two classes. Test it with at least one normal case and one edge case so you can explain the behavior confidently.
• 3Learn that under the hood, classes still use prototypes.