React Hooks: The Complete Guide

Why Use Hooks?

• Eliminates the need for class components.
• Makes code cleaner and easier to read.
• Allows reuse of logic across components with custom hooks.

1️⃣ useState Hook

The useState hook lets you add state to functional components.

const [count, setCount] = useState(0);

2️⃣ useEffect Hook

The useEffect hook runs side effects in functional components.

useEffect(() => {
  console.log('Component mounted');
}, []);

3️⃣ useContext Hook

The useContext hook allows you to access the React Context API without needing a consumer component.

4️⃣ useRef Hook

The useRef hook provides a way to reference DOM elements and persist values across renders.

5️⃣ Custom Hooks

You can create your own hooks to encapsulate reusable logic.

const useFetch = (url) => {
  const [data, setData] = useState(null);
  useEffect(() => {
    fetch(url).then(res => res.json()).then(setData);
  }, [url]);
  return data;
};

Conclusion

React Hooks have simplified state management and lifecycle handling in React apps. Mastering these hooks will make your development process smoother.