Mouse follower

Mouse follower

A React component uses SVG to draw a circle that follows the mouse cursor across the full browser window. The circle’s position is tracked via the `onMouseMove` event handler, which updates React state with the cursor’s `clientX` and `clientY` coordinates. The SVG viewport matches the window’s inner width and height, and the circle is re-rendered with a fixed radius at the updated position. The example demonstrates declarative UI updates driven by user input, using React’s `useState` and `useCallback` hooks.

NNadir-Zenith

Mouse follower

A React application renders a single SVG circle that continuously follows the cursor across a 960-by-500 viewport. The component tracks mouse movement via React’s `useState` and `useCallback` hooks, updating the circle’s `cx` and `cy` attributes on every `onMouseMove` event. Using the `ReactDOM` API to mount the app, the visualization demonstrates declarative state management for real-time interaction without external data sources or animation libraries.

NNicu Calcea

Mouse Follower

A React application renders a single SVG circle that follows the mouse cursor across the full browser window. The component tracks pointer coordinates via React's `useState` and `useCallback` hooks, updating the circle's `cx` and `cy` attributes on every `onMouseMove` event. The viewport dimensions come from `window.innerWidth` and `window.innerHeight`, with the circle initially centered before the first mouse movement. The example demonstrates reactive state-driven SVG updates in a React 16.9 environment.

SShmuel Leider

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

A React component tracks the mouse position across the full browser window and renders a single SVG circle that follows the cursor in real time. The circle’s center coordinates update through the `useState` hook and the `onMouseMove` handler on the SVG element, which captures `clientX` and `clientY` from the event. Rendered using ReactDOM, the visualization demonstrates basic state-driven SVG interaction without any external data or animation library.

Aajardev

Mouse follower

A single circle follows the mouse cursor within an SVG canvas. The circle’s position is updated via React state, triggered by an `onMouseMove` handler that tracks `clientX` and `clientY` coordinates. The example uses React 16.9 with hooks (`useState`, `useCallback`) and renders the SVG element with the circle’s `cx` and `cy` attributes bound to the current mouse position. The visualization demonstrates a simple interactive pattern with minimal code, relying solely on React’s state management and SVG rendering.

JJoakim Warholm

Mouse Follower

A single SVG circle follows the mouse cursor across a 960 by 500 viewport, updating its position in real time. The React component uses the `useState` hook to store the cursor’s `clientX` and `clientY` coordinates and the `useCallback` hook to handle the `onMouseMove` event on the SVG element. Each mouse movement re-renders the circle’s `cx` and `cy` attributes, creating a direct, immediate visual response without animation or interpolation. The rendering relies solely on React’s declarative SVG output.

RRaphael Fogha

Mouse follower, a circle

A circle follows the mouse cursor across a full-screen SVG canvas, with its position updating live in response to pointer movement. The visualization demonstrates interactive React state management, where the initial mouse position is set to the center of the window. Using React's `useState` hook and an SVG `onMouseMove` event handler, the component captures `clientX` and `clientY` coordinates from the event to update the circle's `cx` and `cy` attributes. The code relies on React 16.9 and ReactDOM to render the circle element.

WWhitney Hung