Challenge: Multi-Step Order Form
Explore how to build a stable multi-step order form in React 19 that supports seamless navigation, synchronous and asynchronous validations, and accessible error handling. Learn to manage draft state across steps, run promo code checks without UI stalls, and handle transactional submissions to prevent duplicates while maintaining user responsiveness and accessibility.
We'll cover the following...
Problem statement
A multi-step order form (wizard checkout) UI is required with four steps: Cart, Shipping, Payment, and Review and Submit. The interface must remain responsive while users move between steps, while validation runs (including async promo checks), and while the final submission is processed as a transaction. When validation fails, we must surface errors without collapsing the UI into global spinners or losing draft state. When ...