25 React Interview Questions 2026 (With Answers) — Hooks, React 19, Concurrent Mode

📰 Dev.to · Aindrila Bhattacharjee

Prepare for React interviews with 25 questions covering Hooks, React 19, and Concurrent Mode

intermediate Published 22 May 2026

Action Steps

Review the 25 React interview questions and answers to understand key concepts
Practice building small React projects using Hooks and Concurrent Mode
Test your knowledge by trying to answer the questions without looking at the answers
Apply your understanding of React 19 features to real-world scenarios
Compare your answers with the provided solutions to identify areas for improvement

Who Needs to Know This

Frontend developers and engineers can benefit from this resource to improve their React skills and prepare for technical interviews

Key Insight

💡 Mastering React Hooks, React 19, and Concurrent Mode is crucial for success in frontend development interviews

Key Takeaways

Prepare for React interviews with 25 questions covering Hooks, React 19, and Concurrent Mode

React powers the frontends of Facebook, Instagram, Netflix, Airbnb, and thousands of top tech...