Learn REACT with Real Code Examples

Use React.memo to prevent unnecessary re-renders

Avoid inline functions in render when possible

Lazy-load components with React.lazy

Use key prop correctly in lists

Optimize context usage to prevent excessive re-renders

Escape user input to prevent XSS

Do not use `dangerouslySetInnerHTML` with untrusted content

Use HTTPS for API calls

Validate props to prevent unexpected errors

Follow secure coding practices for state management

Browser dev tools for performance

React Profiler for component rendering

Error tracking with Sentry

Analytics integration for user tracking

Monitor bundle size and load times

ESLint and Prettier for consistency

Unit tests with Jest and RTL

Integration tests for component flows

Type checking with TypeScript or PropTypes

Code reviews and modular design