Robin Wieruch • 4/6/2019

Why do we need a React List Key

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This article explains the importance of using a stable, unique 'key' prop for list items in React, beyond just fixing the common warning. It details why using an array index as a key is an anti-pattern and demonstrates the potential UI bugs this can cause, such as incorrect state being preserved when a list is reordered, using a concrete example with a checkbox.

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#React #performance #List Key
Why do we need a React List Key

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