Top React Questions and Answers for Exam Preparation

Explore top React questions and answers to boost your exam preparation and enhance your understanding of key concepts.

React Questions

Q. Which hook runs only on updates?

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Q. What is the purpose of React.StrictMode?

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Q. What does React.createElement do?

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Q. Which hook provides a stable reference?

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Q. What is the purpose of React.memo?

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Q. Which prop passes functions to children?

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Q. What does useCallback do?

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Q. Which hook runs on mount and unmount?

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Q. Which lifecycle method updates props?

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Q. What is the purpose of the key prop?

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