Hooks in React

  React Hooks are functions that allow functional components to manage state and side effects, facilitating logic reuse and improving code readability.

What are Hooks?

  Introduced in React 16.8, Hooks allow functional components to access features like state and lifecycle without the need for classes. This simplifies code structure and promotes better organization.

Main Hooks in React

  React offers several built-in Hooks that facilitate various functionalities:

• useState: Allows adding state to functional components.
• useEffect: Allows performing side effects in components, such as subscriptions or DOM manipulations.
• useContext: Allows access to React context, facilitating value sharing between components without needing props.
• useReducer: An alternative to useState for managing more complex states.
• useCallback: Memoizes functions to prevent recreating them on every render.
• useMemo: Memoizes calculated values to avoid unnecessary recomputations.

Rules of Hooks

  To ensure the correct functioning of Hooks, it's important to follow certain rules:

• Only call Hooks at the top level: They should not be called inside loops, conditions, or nested functions.
• Only call Hooks from React components: They should not be called from regular JavaScript functions.

  Understanding and correctly applying Hooks is essential for developing modern and efficient React applications.