Fork of Smiley Face Part II
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A yellow circle with a black stroke follows the mouse cursor across the full browser window, responding to every movement of the pointer. The React application uses the `onMouseMove` event to update the circle's center coordinates, which are stored in component state via the `useState` hook. Rendered as SVG, the circle's position dynamically updates as the user moves the mouse, with the viewport dimensions derived from `window.innerWidth` and `window.innerHeight`.
AI-generated descriptionSmiley face implementation with React.
MIT Licensed