What are React hooks?

React Hooks are functions introduced in React 16.8 that allow you to use state and other React features without writing a class component. They provide a more direct and functional way to manage component logic, making code easier to read, reuse, and test. The most commonly used hooks include: - **useState:** Lets you add state to functional components. - **useEffect:** Handles side effects such as data fetching, subscriptions, or manually changing the DOM. - **useContext:** Allows you to access React context values without a wrapper component. - **useReducer:** Provides an alternative to useState for managing complex state logic. - **useRef:** Creates a mutable object that persists between renders, often used to reference DOM elements. Hooks follow specific rules: they must be called at the top level of a functional component or a custom hook and only from React function components or custom hooks. This ensures consistent behavior across renders. Overall, hooks simplify component logic by enabling functional components to manage state and lifecycle events, which were previously only possible in class components. They have become the standard approach for writing React components in modern applications.

React Hooks are special functions introduced in React 16.8 that allow you to use state and other React features without writing a class component. They provide a more direct and expressive way to work with React’s functional components, enabling you to manage state, side effects, context, and more in a simpler and cleaner manner. The most commonly used hooks include: - **useState**: Lets you add state to functional components. - **useEffect**: Allows you to perform side effects such as data fetching, subscriptions, or manually changing the DOM. - **useContext**: Provides a way to access React context within functional components. - **useReducer**: Offers a way to manage more complex state logic similar to Redux reducers. - **useRef**: Gives you a way to persist values across renders without causing re-renders, often used to reference DOM elements. Hooks encourage writing components as pure functions and help avoid the boilerplate and complexities of class components, such as `this` bindings. They also promote code reuse through custom hooks—functions that encapsulate and share logic across components. Overall, React Hooks have become a fundamental part of modern React development, simplifying component logic and improving code readability and maintainability.