What are the Rules of Hooks?
PICTURE THIS: STACK VS QUEUE
Simple meaning
Only call hooks at the top level of a React function, never inside loops or conditions.
WHY — React instead of guessing?
Why interviewers care about React:
who only read docs from people who shipped.
and tied to Full Stack work.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1Only call hooks at
the top level of a React function, never inside loops or conditions.
- 2Only call them from
function components or custom hooks.
- 3Breaking the rules desynchronizes
hook order between renders and causes subtle bugs.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
Only call hooks at the top level of a React function, never inside loops or conditions. Only call them from function components or custom hooks.