What is async / await?

Short answer: Syntactic sugar over Promises for cleaner asynchronous code. async function fetchData() { try { const res = await fetch('/api/data'); const data = await res.json(); console.log(data); } catch (err) { console.error(err); } }

Example code

Syntactic sugar over Promises for cleaner asynchronous code. async function fetchData() { try { const res = await fetch('/api/data');
const data = await res.json(); console.log(data); } catch (err) { console.error(err); } }

Real-world example (ShopNest)

The checkout button uses async/await to call /api/orders, shows a spinner, and catches network errors with a toast.

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.