Mouse Follower

Mouse Follower

A circle follows the mouse cursor across an SVG canvas, updating its position in real time as the pointer moves. Built with React, the app uses the `useState` hook to store the mouse coordinates and a `useCallback` handler triggered by the SVG's `onMouseMove` event. The circle is rendered as an SVG `<circle>` element with a fixed radius of 30 pixels. The viewport is set to 960 by 500 pixels, and the initial position is centered before any mouse movement occurs.

DDavid

Mouse Follower

A circle follows the mouse cursor across a large SVG canvas, updating its position in real time based on pointer movement. The example uses React state and the `useState` and `useCallback` hooks to track the mouse coordinates, passing them to the SVG circle’s `cx` and `cy` attributes. Rendering is handled via ReactDOM, with the SVG element listening for `onMouseMove` events to trigger position updates.

Sspace-captain96

Mouse Follower

A full-screen SVG circle follows the mouse cursor in real time, with its center tied directly to the pointer’s clientX and clientY coordinates. Built with React, the example uses the `useState` and `useCallback` hooks to track mouse position and update the circle’s `cx` and `cy` attributes on every move. Rendering is handled via ReactDOM to an SVG element that spans the entire browser window, with no explicit data source beyond user input.

JJames Rhodes

Mouse Follower

This example shows a single circle that follows the mouse cursor across the full browser window. The circle’s position updates in real time as the user moves the pointer over an SVG canvas. Built with React (version 16.9.0) and ReactDOM, the component uses the `useState` hook to store the mouse coordinates and the `useCallback` hook to handle `mousemove` events, retrieving `clientX` and `clientY` from the event object. The SVG is sized to `window.innerWidth` and `window.innerHeight`, with the circle’s `cx` and `cy` attributes bound to the current mouse position.

IIsh Takkar

Mouse Follower

A 960-by-500 SVG circle follows the mouse cursor across the canvas, its center updating in real time to match the pointer’s client coordinates. Built with React and ReactDOM, the example uses the `useState` hook to store the cursor position and a `useCallback`-wrapped `onMouseMove` event handler to update it. The SVG circle is rendered with a fixed radius of 30 pixels, demonstrating state-driven drawing within a minimal React component.

CCaroline Ghisolfi

Mouse Follower

This example shows a single circle that follows the mouse cursor across an SVG canvas. Built with React and D3 v5, it uses React’s `useState` hook to track the cursor’s clientX and clientY coordinates on every `mousemove` event, then re-renders the circle’s `cx` and `cy` attributes to match. The `useCallback` hook memoizes the event handler, and the initial mouse position is set to the canvas center. The rendering uses ReactDOM to mount the SVG, with no external data source.

CChristopher Cleland

Mouse Follower

A single circle follows the mouse cursor across an SVG canvas, responding to every pointer movement. Built with React 16.9, the app tracks the cursor’s clientX and clientY coordinates via an onMouseMove event handler, storing them in state with useState and updating the circle’s cx and cy attributes accordingly. The useCallback hook optimizes the event handler, while ReactDOM renders the interactive SVG element.

DDavid Beales

Mouse Follower

A React component renders an SVG circle that tracks the mouse position across a 960×500 canvas. The App uses the useState and useCallback hooks to store and update the cursor’s clientX and clientY coordinates on every mousemove event. The circle’s cx and cy attributes are bound to this state, making it follow the pointer in real time. The rendering relies on ReactDOM and SVG elements, with no external data sources beyond user interaction.

Jjwesterlund412