Don't just read about React. Build something. Right now.
Live Code Editor
Select a starter example or write your own JSX
Live preview renders here
Edit the code on the left to see changes
Interactive Demo Modules
Each demo is a full interactive experience — not a screenshot.
Kanban Board
Click a card to move it →
To Do (2)
In Progress (1)
Done (1)
Shows: useState, AnimatePresence, layout animations
Chat UI
Real-time chat with simulated bot responses
Shows: useState, useEffect, useRef (scroll-to-bottom)
E-Commerce Product
Interactive product page components
React Runner Pro
$129.00
Color
Size
Shows: local state, prop drilling, composition
Mini Dashboard
Live-updating chart + sortable table
| Metric ↑ | Value |
|---|---|
| Bounce Rate | 34 |
| Conversion | 3.2 |
| Sessions | 45,021 |
| Users | 12,847 |
Shows: setInterval, derived state, data visualization
Think you know React? Prove it.
Timed coding challenges with live tests.
Build a Toggle Switch
Create a component that toggles between ON and OFF when clicked.
0s
Test: Component should render a button that displays 'ON' or 'OFF' and toggles on click.