What are React hooks used for?

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React Hooks are functions that let you use React state and lifecycle features inside functional components, without needing to write class components.

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What React Hooks are used for:

• Managing state:
  The useState hook lets you add state variables to functional components.

• Running side effects:
  The useEffect hook lets you perform side effects like data fetching, subscriptions, or manually updating the DOM after rendering.

• Sharing logic:
  Custom hooks let you extract and reuse component logic across multiple components.

• Accessing context:
  The useContext hook allows you to consume React context more easily inside functions.

• Other utilities:
  Hooks like useRef (for mutable refs), useReducer (for complex state), and useMemo (for memoizing expensive calculations) provide powerful tools to manage component behavior.

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Why Hooks?

Before hooks, state and lifecycle features were only available in class components. Hooks allow you to write cleaner, more concise, and reusable code in functional components, which are easier to understand and test.

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