Cassidy Williams • 10/28/2023

How and when to use keys in React

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This technical article explains how and when to use keys in React when rendering lists. It covers why keys are necessary for React's reconciliation process and provides best practices, such as ensuring keys are unique, avoiding random IDs generated during render, and not relying solely on array indices, especially for dynamic lists. The article includes a code example demonstrating proper key usage with stable IDs from data objects.

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#React #rendering #performance
How and when to use keys in React

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