What should I learn first about React data?
Props and state. Understand props as read-only inputs from a parent and state as internal data the component owns. Master passing props, lifting state, and the one-way data flow before anything else.
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More FAQs in A Roadmap to Mastering Data Handling in React
In order: props and state, controlled inputs, data fetching, lifting and sharing state, Context API, forms and validation, derived data, and finally state management libraries when the app outgrows Context.
After you understand props, state, fetching, and lifting state. Context solves deep prop drilling, so learn it once you have felt the pain of threading props through many levels.
When your app outgrows Context. If Context is causing unnecessary re-renders or your state logic is complex with many transitions, learn Redux Toolkit or another library for complex shared state.
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