Frontend Mastery Playbook #10

Code Example

// React component for dashboard with charts
function ProductCard({ title, price }) {
  return (
    <article className="product-card">
      <h3>{title}</h3>
      <p className="price">${price}</p>
    </article>
  );
}

// Objective: reduce bundle size
// Run: document.querySelector('.btn')

Commands & References

• document.querySelector('.btn')
• npx create-react-app my-app
• npm run dev

Lab Steps

1. Set up with: document.querySelector('.btn')
2. Build or refactor the component for the scenario.
3. Validate accessibility and performance.
4. Propose one improvement for production.

Exercises

• Add one accessibility enhancement.
• Implement one performance optimization.
• Write one unit test for this component.