10. React 18 with TypeScript - useEffect Hook
Автор: Miss Xing (邢老师)
Загружено: 2024-10-30
Просмотров: 182
Описание:
@MissXing
The useEffect hook in React is a powerful tool for managing side effects in functional components. Side effects can include data fetching, subscriptions, or manually changing the DOM.
Key Concepts
Effect Function: The function you pass to useEffect is executed after the component renders. This is where you can perform side effects.
Cleanup Function: If your effect creates a subscription or timer, you can return a cleanup function that React will call when the component unmounts or before the effect runs again.
Dependencies Array: The second argument is an array of dependencies. The effect runs only when one of the dependencies changes. If you pass an empty array ([]), the effect runs only once after the initial render.
Source code:
https://github.com/TinaXing2012/react...
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