Mouse Follower (lesson 3)

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Mouse Follower (lesson 3)

✓ Published1🌍 Public

Last edited May 5, 2021

Created on May 5, 2021

A single yellow circle follows the mouse cursor across an SVG canvas. The example combines React state management with D3’s selection and event handling to track pointer coordinates. It uses React’s `useState` and `useCallback` hooks to update the circle’s center position on every `mousemove` event. The rendering relies on D3 v5 and React 16.9, with the circle’s `cx` and `cy` attributes bound directly to the stored mouse position. No external data source is used; the visualization demonstrates basic interactive SVG rendering with React.

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Mouse follower

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