How does inheritance work with classes?

Short answer: Classes support extends to create a subclass that inherits properties and methods from a parent class. Example: class Animal { speak() { console.log("Animal speaks"); } } class Dog extends Animal { speak() { console.log("Dog barks"); } } const dog = new Dog(); dog.speak(); // Dog barks

Example code

Classes support extends to create a subclass that inherits properties and methods from a parent class. Example: class Animal { speak() { console.log("Animal speaks"); } }
class Dog extends Animal { speak() { console.log("Dog barks"); } }
const dog = new Dog(); dog.speak(); // Dog barks

Real-world example (ShopNest)

ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.