React Interview Questions
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Q21
What is key in React list rendering?
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Q22
Why keys are important in React?
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Q23
What is reconciliation in React?
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Q24
What is memoization in React?
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Q25
What is React.memo?
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Q26
What is useMemo hook?
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Q27
What is useCallback hook?
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Q28
Difference between useMemo and useCallback?
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Q29
What are synthetic events in React?
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Q30
How does event handling work in React?
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Q31
What is prop drilling?
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Q32
How to prevent re-rendering in React?
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Q33
What is forwardRef?
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Q34
What is useRef hook?
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Q35
What is StrictMode in React?
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Q36
What are higher-order components (HOC)?
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Q37
What is component lifecycle?
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Q38
What are lifecycle methods in class components?
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Q39
What is error boundary?
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Q40
What is lazy loading in React?
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