AI interview guide

React Interview Questions With Answers

React interviews usually test fundamentals: state flow, rendering behavior, hooks, effects, performance, and component design.

Hooks

Be ready to explain useState, useEffect, useMemo, useCallback, refs, and when not to overuse memoization.

Rendering

Understand keys, reconciliation, controlled components, prop changes, and why state updates can batch.

Performance

Talk about list virtualization, splitting components, avoiding unnecessary effects, and measuring before optimizing.

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