React Hooks are a feature introduced in React

React Hooks are a feature introduced in React 16.8 that allow developers to use state and other React features in functional components, instead of being limited to class components. This makes it easier to write reusable and composable code in React.

There are several built-in hooks in React, including:

useState: This hook allows you to add state to your functional components. You can use it to store and update values over the lifetime of a component.

useEffect: This hook allows you to perform side effects in your functional components. You can use it to fetch data, manipulate the DOM, and more.

useContext: This hook allows you to access context values in your functional components. You can use it to pass data through a component tree without having to manually pass props down the tree.

useRef: This hook allows you to create a mutable ref object that persists across re-renders. You can use it to store a reference to a DOM node or to hold onto any other value that you need to persist.

useCallback: This hook allows you to memoize a function so that it only changes when its dependencies change. You can use it to optimize your components and prevent unnecessary re-renders.

useMemo: This hook allows you to memoize a value so that it only changes when its dependencies change. You can use it to optimize expensive calculations and prevent unnecessary re-renders.

useReducer: This hook allows you to manage complex state in your functional components. You can use it to update state based on actions, similar to how you would use a Redux store.

Hooks are a powerful feature in React that allow you to write more concise and composable code. They are widely used in modern React applications and have become a standard way of writing React components.