{"version":"1.0","type":"rich","title":"React Starter","description":"A minimal React starter demonstrates the difference between a current state value and the value rendered one frame earlier. The application uses React’s `useState` to hold an initial count of 20, and `useRef` combined with `useEffect` to store the previous count after each render. It displays both numbers in an `h1` element. The example loads React and ReactDOM from unpkg CDN, renders via `ReactDOM.render`, and tracks the previous value by updating a ref inside a side-effecting hook, showing a simple state-update pattern without external data.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0d48adfcf0f447a69d1f573fa0f93cfe?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}