📊 React Js
Q. What does `useCallback` hook do?
  • (A) It returns a new function every time
  • (B) It memoizes a function to avoid unnecessary re-creation
  • (C) It creates a new state
  • (D) It modifies context
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✅ Correct Answer: (B) It memoizes a function to avoid unnecessary re-creation

Explanation: useCallback returns a memoized version of a callback that only changes if dependencies change.

Explanation by: Mr. Dubey
useCallback returns a memoized version of a callback that only changes if dependencies change.

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