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.

Published by Mr. Dubey ⭐ 109.99K Points at 08-Jun-2025 03:59 pm in React Js

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

💬 Discussion

📊 Question Analytics

👁️
70
Total Visits
📽️
1 y ago
Published
🎖️
Mr. Dubey
Publisher
📈
93%
Success Rate