Explain the concept of currying in JavaScript.

Short answer: Currying transforms a function that takes multiple arguments into a sequence of functions that take one argument each. Example: function add(a) { return b => a + b;

Example code

} console.log(add(5)(3)); // 8 ✅ Useful for function reusability and functional composition.

Real-world example (ShopNest)

ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling.

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.