📊 React Js
Q. What does the useEffect hook’s cleanup function do?
  • (A) Runs when the component unmounts or before re-running the effect
  • (B) Sets initial state
  • (C) Updates props
  • (D) Fetches data
💬 Discuss
✅ Correct Answer: (A) Runs when the component unmounts or before re-running the effect

Explanation: Cleanup helps avoid memory leaks and stale subscriptions.

Explanation by: Mr. Dubey
Cleanup helps avoid memory leaks and stale subscriptions.

💬 Discussion

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