React Developer interview questions: the 8 to ask

1. 1.When should you use useMemo and useCallback, and when is it pointless?
2. 2.How do you avoid unnecessary re-renders?
3. 3.How do you separate server state from local state?
4. 4.Why do list items need keys?
5. 5.How do you make a component accessible?
6. 6.How do you test a component that calls an API?
7. 7.What do Server Components change?
8. 8.How do you split a large app (code splitting)?

Tip: for every answer, ask for a concrete example (situation, action, result). An answer without an example is worth half.