Скачать или смотреть 10. React 18 with TypeScript - useEffect Hook

‪@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...