What are React Hooks?
React Hooks are functions that let you "hook into" React state and lifecycle features from function components. They were introduced in React 16.8 to allow you to use state and other React features without writing a class.
Common Hooks
useState
The useState hook allows you to add state to functional components. It returns a stateful value and a function to update it.
useEffect
The useEffect hook lets you perform side effects in function components. It serves the same purpose as componentDidMount, componentDidUpdate, and componentWillUnmount combined.
Best Practices
- Only call hooks at the top level
- Only call hooks from React functions
- Use multiple useState calls for different state variables