{"version":"1.0","type":"rich","title":"Mouse Tracker","description":"A full-screen SVG tracks the mouse and draws a single black circle at the cursor's current position. The circle follows pointer movement in real time, rendered with React's `useState` and `useCallback` hooks to update its `cx` and `cy` coordinates on every `mousemove` event. The SVG uses `window.innerWidth` and `window.innerHeight` for its dimensions, and the example demonstrates declarative state-driven rendering with React 16.9 and ReactDOM.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/879ce83a9d7b4c3cbebee2c679b4feef?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}