👉 This React Interview Answer Worked — Until I Asked One Question

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YouTube Excerpt: In a recent React interview, I asked a simple problem: Build a counter that increments while a button is held down. The candidate solved it correctly using useState.The code worked. But when I asked follow-up questions about re-rendering, race conditions, and why state was used, the answers weren’t clear. That’s what this video is about. In this video, we break down: -Why using useState for timers can cause subtle bugs -How re-rendering and async state updates lead to race conditions -When useRef is the correct tool and why -How JavaScript timers behave inside React What interviewers actually look for beyond a working solution This isn’t about memorizing hooks. It’s about understanding how JavaScript and React work together. 👩‍💻 Who this video is for -JavaScript developers learning React -React developers preparing for interviews -Anyone who wants to understand why a solution works, not just that it works 📌 Key Concepts Covered -useState vs useRef -Re-rendering in React -Race conditions -setInterval in React -Interview-level React thinking If this video helped you understand React better: Like the video Subscribe for more JavaScript + React deep dives ▶️ Related Playlist - React for Beginners -https://www.youtube.com/playlist?list=PLC8OkhrVTHNEXTn2BziXxTqO4S7_58jcc 2- Learn JavaScript https://www.youtube.com/playlist?list=PLC8OkhrVTHNFzxNVvdtCmTw5OSYs4wv5H

In a recent React interview, I asked a simple problem: Build a counter that increments while a button is held down. The candidate solved it...

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