React Keys Aren't Just for Silencing Warnings: Identity, Reconciliation and State
One small thing in React looks simple but is surprisingly important: the key prop. Most of us first meet it as a console warning: Warning: Each child in a list should have a unique "key" prop. We ad
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Tarun Sharma
React.js Frontend Web Developer | Next.js Specialist
The reset-with-key section is the one I'd push people to read first, it replaces a lot of effect-syncing code. One caveat: it remounts the whole subtree, so if the form fetches on mount you pay for that fetch again on every switch. For heavy setup I'd put the key only on the part that needs to reset.