What is the typeof operator?

Short answer: Used to find the type of a variable. typeof "Hello"; // "string" typeof 10; // "number" typeof null; // "object" (bug)

Example code

Used to find the type of a variable. typeof "Hello"; // "string" typeof 10; // "number" typeof null; // "object" (bug)

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.