BEGINNER • HTML and CSS Basics
Component Checkpoint #3
This lesson focuses on enhance user experience for a multi-step form wizard interface. You will use: npm run build | element.addEventListener('click', handler) | npm create vite@latest my-app. The content is designed for practical frontend development.
Code Example
// Performance: lazy load
const HeavyChart = React.lazy(() => import('./HeavyChart'));
<Suspense fallback={<Spinner />}>
<HeavyChart data={data} />
</Suspense>
// multi-step form wizardCommands & References
- npm run build
- element.addEventListener('click', handler)
- npm create vite@latest my-app
Lab Steps
- Set up with: npm run build
- Build or refactor the component for the scenario.
- Validate accessibility and performance.
- Propose one improvement for production.
Exercises
- Add one accessibility enhancement.
- Implement one performance optimization.
- Write one unit test for this component.