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React Best Practices for 2024

•BY Tech Writer
6 MIN READ
ReactJavaScriptBest PracticesFrontend

React continues to evolve, and with it, the best practices for building robust applications. Here are the essential patterns you should follow in 2024.

Component Design Principles

Keep Components Small and Focused

jsx
// Good: Single responsibility
function UserProfile({ user }) {
  return (
    <div className="user-profile">
      <Avatar src={user.avatar} />
      <UserInfo name={user.name} email={user.email} />
    </div>
  );
}

// Better: Composed components
function Avatar({ src, alt }) {
  return <img src={src} alt={alt} className="avatar" />;
}

function UserInfo({ name, email }) {
  return (
    <div className="user-info">
      <h2>{name}</h2>
      <p>{email}</p>
    </div>
  );
}

State Management

Use the right tool for the right job:

jsx
// Local state for component-specific data
const [isOpen, setIsOpen] = useState(false);

// Context for shared state
const ThemeContext = createContext();

// External state management for complex app state
import { useStore } from 'zustand';

Performance Optimization

jsx
// Memoization for expensive calculations
const expensiveValue = useMemo(() => {
  return heavyCalculation(data);
}, [data]);

// Callback memoization
const handleClick = useCallback(() => {
  onItemClick(item.id);
}, [item.id, onItemClick]);

Conclusion

Following these practices will help you build more maintainable and performant React applications.