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Roadmap to becoming a developer in 2022
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developer-roadmap/content/roadmaps/103-react/content/100-react-fundamental-topics/106-lists-and-keys.md

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Lists and Keys

When you render lists in React, you can use the key prop to specify a unique key for each item. This key is used to identify which item to update when you want to update a specific item.

Free Content Lists and Keys List components in React by Example Why do we need the key prop in React?