Solution: Multi-Step Order Form
Explore how to build a robust multi-step order form in React 19 using parent-owned state for step stability, step-scoped validation to control progression, and async promo code checks with cancellation to prevent UI stalls. Understand how to manage submission as a coordinated transaction with React 19 hooks like useActionState, useOptimistic, and useTransition. This lesson teaches accessible error summaries and optimistic UI updates that maintain user input without resetting the form wizard.
We'll cover the following...
Here is the multi-step order form implementation that uses a parent-owned draft to keep step navigation stable, runs step-scoped field validation to block invalid progression, performs async promo checks with stale request cancellation to avoid UI stalls, and applies a schema-level validation gate at submit time with an announced error ...