React Interview Questions — a practical guide to React interview questions with clear examples you can reuse in real projects.
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Short description
Be ready for hooks rules, keys, reconciliation, state vs props, and useEffect deps.
Sample Q&A
Q: State vs props?
A: State owned/updated locally; props passed from parent and read-only.
Q: Why keys?
A: Help React identify list items across updates.
Q: useEffect cleanup?
A: Unsubscribe/timers to avoid leaks.