Can you explain the useContext hook?

Short answer: useContext lets you consume a context value without using a Context.Consumer. ✅ Example: const ThemeContext = React.createContext("light"); function App() { return ( <ThemeContext.Provider value="dark"> <Toolbar /> </ThemeContext.Provider> ); } function Toolbar() { const theme = useContext(ThemeContext);

Example code

return <div className={`theme-${theme}`}>Theme is {theme}</div>;
}

Real-world example (ShopNest)

ShopNest’s cart icon uses useState for count and useEffect to load the cart once on mount.

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.