← React, the Mental Model
Lesson 5 · atom React, the Mental Model
Lists, Forms & Feedback
Build an interactive form with validation and loading states.
Before you start
Real UI is mostly the states around the happy path: empty, loading, error, partial. A form that only handles success looks finished in a demo and falls apart in a week. Model every state explicitly.
5 exercises·up to 72 XP·5/5 hearts