How do you parse JSON request bodies in Express?

Short answer: Use Express’s built-in middleware: app.use(express.json()); This enables the app to read req.body in JSON POST/PUT requests.

Example code

Use Express’s built-in middleware: app.use(express.json()); This enables the app to read req.body in JSON POST/PUT requests.

Real-world example (ShopNest)

Express middleware authenticates JWT, then the /orders route handler creates the order.

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.