Explain JavaScript in the context of Modern JavaScript (ES6+) for Beginners.

Short answer: JavaScript runs single-threaded with an event loop. Closures capture lexical scope; promises/async handle I/O without blocking the UI thread.

Real-world example (ShopNest)

On the ShopNest storefront UI, this affects how users see products, update the cart, and recover from slow or failed API calls.

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.