Performance Tips Every React.JS Developer Should Know
- Use functional components and React Hooks whenever possible, as they offer better performance compared to class components.
- Implement PureComponent or React.memo to prevent unnecessary re-renders when props or state haven’t changed.
- Use shouldComponentUpdate in class components to control when a component should re-render.
- Leverage the useMemo and useCallback hooks to memoize expensive computations and functions.
Virtualization and Pagination:
- For long lists, use virtualization libraries like react-virtualized or react-window to render only the visible items, reducing the initial render and improving scroll performance.
- Implement infinite scrolling or pagination to fetch and display data in smaller chunks, avoiding the loading of large datasets at once.
- Utilize the Chrome DevTools and React DevTools Profiler to identify and fix rendering bottlenecks.
- Minimize the use of inline arrow functions in render methods to avoid unnecessary re-renders.
- Use the “key” prop effectively to help React identify items in lists and improve reconciliation.
- Choose an appropriate state management solution like Redux or MobX based on your application’s complexity and needs.
- Use selectors and memoization techniques to avoid unnecessary re-computation of derived state.
- Implement code splitting using tools like React’s built-in…