Q. What is the role of a key in a list of elements?

  • (A) To apply styles
  • (B) To identify which items changed
  • (C) To improve performance
  • (D) To bind events
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✅ Correct Answer: (B) To identify which items changed
Explanation: Keys help React identify which items have changed, are added, or removed.

Published by Mr. Dubey ⭐ 109.99K Points at 08-Jun-2025 03:15 pm in React Js

Explanation by: Mr. Dubey
Keys help React identify which items have changed, are added, or removed.

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