How do modules work in JavaScript?

Short answer: Modules are separate files that export code and import it elsewhere, ensuring encapsulation and reusability.

Example code

// export.js export const PI = 3.14; // import.js import { PI } from './export.js'; Follow me on LinkedIn:

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.