Top 10 React Interview Questions and Answers 2025🔹 ReactJS Interview Questions for Experienced Devs
Top 10 React Interview Questions and Answers 2025🔹 ReactJS Interview Questions for Experienced Devs Advanced React interview cheatsheets : https://drive.google.com/file/d/1YIv4... https://drive.google.com/file/d/1WEWz... Want to crack your next React interview with confidence? In this video, we cover the top 10 React interview questions and answers every developer should know. Whether you're brushing up for your first frontend job or preparing for a senior role, these ReactJS interview questions will give you the edge. We break down each concept in a simple, visual, and beginner-friendly way — from re-render behavior, useMemo vs useCallback, to Suspense, hydration, and performance optimizations. 🎯 Topics covered: React rendering and reconciliation Concurrent features Batching updates in React 18 Memoization hooks Virtualization for large lists useRef vs useState useImperativeHandle Hydration in SSR And more! This video is perfect for: ✅ Frontend developers ✅ React beginners to advanced ✅ Anyone preparing for React interview questions for experienced roles 📌 Don’t forget to like, comment, and subscribe for more in-depth coding tutorials and interview prep! 00:00 Introduction 00:30 What is React Fiber and how does it differ from the old reconciliation algorithm 02:46 How does React determine when to rerender a component 04:21 What are concurrent features in React and how do they help 06:49 Explain React’s batching behavior and what changed in React 18 08:49 What is the difference between useMemo and useCallback and when should you not use them 10:50 How does Suspense work in React and what are some real use cases beyond lazy loading 12:35 What is useImperativeHandle in React and when should it be used 14:37 How do you optimize large lists in React 16:19 How does useRef differ from useState 17:16 How does React handle hydration in SSR and what problems can arise 19:00 Final Thoughts ▶️ Playlists you might be interested in: 🔴 Win Machine Coding interviews in React → • 🔥 Win Machine Coding Interviews in React S... 🔴 All About React – Components, Hooks → • All About React – Components, Hooks, State... 🔴 60 Seconds to Your Job Offer – Win Every Interview! 🚀 → • 60 Seconds to Your Job Offer – Win Every I... 🔴 Awesome React Projects → • Playlist 🔴 Javascript interview questions → • Playlist 🔴 Shorts → • Playlist 🔥 If you found this video helpful — don’t forget to: 👍 Like the video 🔁 Share it with your friends 📥 Subscribe to Shubham Kulkarni channel for more web dev tips & interview insights 🔔 Hit the bell icon so you never miss a video! 📲 Follow me for daily coding content & behind-the-scenes: 👉 Instagram: / shubhamkulkarni_insta 💼 Connect with me on LinkedIn: / shubhkulkarniofficial 🎯 Let’s grow together! #KeepLearning #WebDevelopment #JavaScript #ReactJS #CodingWithShubham #60SecondsToYourJobOffer #TechInterviewTips #FrontendInterview