Table of Contents

  • Memoization Strategies

  • React.memo for Component Memoization
  • useMemo for Expensive Calculations

React Performance Optimization Techniques

January 3, 2024

James Wilson

Discover advanced techniques to optimize React application performance, from memoization to code splitting.

React
Performance
Optimization
JavaScript
Frontend

React performance optimization is essential for creating smooth, responsive user experiences.

Memoization Strategies

React.memo for Component Memoization

typescript
3const ExpensiveComponent = React.memo(({ data, onUpdate }) => {
4  return (
5    <div>
6      {data.map(item => <Item key={item.id} item={item} />)}
7    </div>
8  );
9});

useMemo for Expensive Calculations

typescript
3const processedData = useMemo(() => {
4  return data.filter(item => item.active)
5    .sort((a, b) => a.priority - b.priority);
6}, [data]);

These optimizations can dramatically improve your React application's performance and user experience.