Interview Resource
Top React Interview Questions
A focused review of the React ideas interviewers use to test practical understanding.
How React thinks
Explain components as pure descriptions of UI, then connect props and state to rendering. Interviewers value a clear mental model more than memorized APIs.
Hooks and effects
Describe effects as synchronization with external systems. Include cleanup, dependency correctness and the difference between derived values and side effects.
Reconciliation and keys
Stable keys let React preserve identity across renders. Use data IDs and explain why indexes are fragile when a list changes order.