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What is React Fiber?

Q: What is React Fiber?

Short answer: React Fiber is a complete rewrite of React's reconciliation algorithm. Explain a bit more It is designed to improve the rendering performance and make React more responsive and capable of handling asynchronous rendering. Key Features: Incremental Rendering: React Fiber allows rendering to be split into chunks, so it can pause and resume work, improving responsiveness. Prioritization: React can assign different priority levels to updates (e.g., user input vs. background updates). Async Rendering: Enables non-blocking UI updates, making React apps feel more responsive. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.

Short answer: React Fiber is a complete rewrite of React's reconciliation algorithm.

Explain a bit more

It is designed to improve the rendering performance and make React more responsive and capable of handling asynchronous rendering. Key Features: Incremental Rendering: React Fiber allows rendering to be split into chunks, so it can pause and resume work, improving responsiveness. Prioritization: React can assign different priority levels to updates (e.g., user input vs. background updates). Async Rendering: Enables non-blocking UI updates, making React apps feel more responsive.

Say this in the interview

Define — one clear sentence (the short answer above).
Example — relate it to a project like ShopNest or your real work.
Trade-off — when you would not use it.

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