Coding

Top 75 React Interview Questions You Should Know

Hooks, rendering, performance, state management, and system design angles — everything interviewers ask React developers in 2026.

Priya SharmaPriya Sharma
12 min read8 Jul 2026
Top 75 React Interview Questions You Should Know
Coding

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React fundamentals

Strong candidates articulate component model, JSX, and one-way data flow clearly.

  • Virtual DOM vs reconciliation
  • Controlled vs uncontrolled components
  • Keys in lists

Hooks deep dive

Expect follow-ups on useEffect dependencies, useMemo trade-offs, and custom hooks.

#React#Frontend#JavaScript

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