Q. What is the role of `key` in React lists?

  • (A) Used as an index
  • (B) Used to uniquely identify list items
  • (C) Used to sort list items
  • (D) Used for applying styles
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✅ Correct Answer: (B) Used to uniquely identify list items
Explanation: Keys help React identify which items have changed or been removed.

Published by Mr. Dubey ⭐ 109.99K Points at 08-Jun-2025 03:19 pm in React Js

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

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