React
JavaScript
Coding
Mastering React Hooks
5 min read
Listen to this article
## Introduction to Hooks
React Hooks revolutionized how we write components. They allow us to use state and other React features without writing a class. But mastering them takes practice.
### The Power of useEffect
`useEffect` is arguably the most powerful and tricky hook. It handles side effects like data fetching, subscriptions, and manually changing the DOM.
```tsx
useEffect(() => {
const fetchData = async () => {
const data = await fetch('/api/data');
setData(data);
};
fetchData();
}, []);
```
Understanding the dependency array is key to avoiding infinite loops and stale closures.
### Custom Hooks
Custom hooks are where the real magic happens. They allow you to extract component logic into reusable functions.
For example, a `useWindowSize` hook can be used across multiple components to make them responsive.
## Conclusion
Hooks make our code more readable, reusable, and easier to test. If you haven't fully embraced them yet, now is the time.