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Last edited Jul 2, 2024

Created on Jun 26, 2024

This example shows a simple interactive smiley face built with React and D3. A black circle follows the mouse cursor across an SVG canvas, responding to every mouse movement event. The underlying code uses React's `useState` and `useCallback` hooks to track the cursor position and re-render the circle accordingly, while the SVG element's `onMouseMove` handler captures the event data. The rendering is handled entirely through React's `ReactDOM.render` method, with D3 loaded but not actively used in the visible logic.

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Smiley face implementation with React.

MIT Licensed

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