Mouse Follower

Mouse Follower

This example displays a single black circle that follows the mouse cursor across an SVG canvas. The circle’s position updates live based on the cursor’s coordinates, which are tracked through React state. The code uses React’s `useState` and `useCallback` hooks, an SVG `<circle>` element, and D3.js version 5 for the underlying library. The rendering relies on ReactDOM to mount the component, with no additional data sources or animations beyond the direct mouse-following interaction.

SSophia Cofone

Mouse Follower

A single black circle follows the mouse cursor across an SVG canvas. The example demonstrates how React manages dynamic state alongside D3’s rendering environment. Using React’s `useState` and `useCallback` hooks, the component tracks mouse coordinates from the SVG’s `onMouseMove` event and updates the circle’s `cx` and `cy` attributes. The circle is rendered via React’s JSX, while D3 v5 is loaded but not directly used for interaction; the visualization relies entirely on React’s state updates to redraw the SVG element in real time.

Rrstrauss127

Mouse Follower

A single black circle follows the mouse cursor across a blank SVG canvas. The React component tracks pointer coordinates via the `onMouseMove` event, updating the circle’s `cx` and `cy` attributes with the client’s position. Using `useState` to hold the origin and `useCallback` for the handler, it re-renders the circle at the new location on every movement. The example demonstrates dynamic SVG updates driven by React state changes without external data.

AAlex Gomes

Mouse Follower

A black circle follows the mouse as it moves across a blank SVG canvas. The example demonstrates React state management with the `useState` and `useCallback` hooks to track cursor coordinates. Each mouse movement updates the circle’s `cx` and `cy` attributes, while d3.v5 is loaded but not used in the visible logic. The SVG rendering is handled by React, with the circle’s position initialized at the canvas center.

OOlowogoke Seun

Mouse follower

A single black circle follows the mouse cursor across an SVG canvas. The circle’s position updates on every `mousemove` event, driven by React state. The application uses React’s `useState` and `useCallback` hooks to track the cursor’s coordinates and re-render the circle accordingly. The example is rendered with D3.js v6 for SVG creation, while React handles the interactive state, with no external data source.

Sschfflr

Mouse follower

A single black circle follows the mouse pointer across a blank SVG canvas. The React component tracks cursor coordinates through an `onMouseMove` event handler, storing them in state via `useState` and updating the circle’s `cx` and `cy` attributes. The app uses React 16.9 and renders the SVG directly with ReactDOM.

MMark Zwart

Mouse Follower

A black circle follows the mouse pointer across a blank SVG canvas. The example demonstrates interactive state management in React, where mouse coordinates update the circle’s position in real time. It uses React’s `useState` and `useCallback` hooks to track and handle mouse movement events, while d3.v5 provides the SVG rendering utilities. The circle’s center is set directly from the `clientX` and `clientY` properties of the browser’s mouse event, with no additional data or animation logic.

AALI Akbar SABZI

Mouse Follower

A black circle follows the mouse cursor as it moves across a full-screen SVG canvas. The visualization updates the circle's position in real time using React's `useState` and `useCallback` hooks with an `onMouseMove` event handler. The code combines React 16.9 with D3.js v7, rendering solely through SVG elements without any data source, demonstrating interactive state-driven graphics.

AAustinSkrobar