What are some common mistakes developers make when using useState in React?
One common mistake is not initializing the state properly. For example, using an object without setting default values can lead to errors.
Can you give me an example of that?
Sure! If you initialize state like this: const [state, setState] = useState({});
and then try to access state.property
, it will be undefined.
What about updating state? Any mistakes there?
Yes, another mistake is not using the functional form of setState when the new state depends on the previous state. Always use setState(prevState => newState)
in such cases.
Thanks! Any tips for avoiding these mistakes?
Always ensure your initial state is well-defined and use the functional update form when necessary. Also, consider using TypeScript for better type safety!
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