Fork of Hello HTML

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Fork of Hello HTML

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Last edited Feb 15, 2026

Created on Feb 6, 2026

A yellow circle tracks the mouse across an SVG canvas, with its position updated on every mouse move event. The example is built with React, using `useState` and `useCallback` to manage the event handler, and leverages D3 v7's `arc` function to define the path for the smile shape. The `HappyFace` component composes the `BigCircle`, `Eye`, and `Mouth` subcomponents, each rendered as SVG elements with specified coordinates and radii.

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