Frontend Mastery Playbook #20

Code Example

// React component for real-time chat interface
function ProductCard({ title, price }) {
  return (
    <article className="product-card">
      <h3>{title}</h3>
      <p className="price">${price}</p>
    </article>
  );
}

// Objective: optimize render performance
// Run: npm run dev

Commands & References

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

Lab Steps

1. Set up with: npm run dev
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.