What are props in React?

Short answer: Props (short for "properties") are read-only data passed from a parent component to a child. ✅

Example code

function Greeting(props) { return <h1>Hello, {props.name}!</h1>; } <Greeting name="Alice" />

Real-world example (ShopNest)

ProductCard receives price via props. The parent Catalog owns selected filters in state and passes them down.

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.