useState: Giving Components Memory
useState gives a component its own memory, letting it track information that changes over time. It's used for everything from handling form input to toggling UI. The biggest footgun: state updates are asynchronous and only apply on the next render.
useState gives a component its own memory. It returns a pair: the current state value and a function to update it, which triggers a re-render. It's the foundation for interactivity, used to manage form inputs, track a modal's visibility, or store fetched API data. The most common footgun is assuming state updates are synchronous; the new value is only available on the next render, not immediately after calling the set function.
Read the original → react.dev
- #react
- #hooks
- #state management
- #frontend
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