What is React Hooks?

React Hooks are special functions introduced in React v16.8 that let you “hook into” React features—like state and lifecycle methods—from functional components, without writing classes.

Stateful Logic in Functions 🧠

• Hooks like useState and useReducer allow you to manage component state directly in functions.
• No need for this.state or this.setState.

2. Side-Effects Management 🌐

   • useEffect replaces lifecycle methods (componentDidMount, componentDidUpdate, componentWillUnmount).
   • You can fetch data, subscribe to events, or manipulate the DOM in a single, declarative API.

3. Custom Hooks for Reusability 🔄

   • You can create your own hooks (useAuth, useForm) to encapsulate and share complex logic across components.
   • Custom hooks are just functions that use built-in hooks internally.

4. Rules of Hooks 📏

   • Only call hooks at the top level of your component (no loops or conditions).
   • Only call hooks from React functions (functional components or custom hooks).

5. Cleaner & More Modular Code 🧩

   • Hooks enable splitting component logic by concern (e.g., a useTimer hook), rather than by lifecycle method.
   • Leads to easier testing, maintenance, and reuse.