Mouse Follower

Mouse Follower

A circle follows the mouse cursor across the full browser window, with its position updating in real time to match the pointer's coordinates. Built with React hooks (useState and useCallback), the app tracks mouse movement via the SVG onMouseMove event and renders the circle using SVG elements. The visualization uses ReactDOM to mount the component and adjusts to the window's inner dimensions, demonstrating a simple interactive pattern with no external charting library.

Ggeorgie-flood

Mouse Follower

A circle follows the mouse cursor across a full-window SVG canvas. Built with React, the app tracks pointer coordinates through an SVG `onMouseMove` handler, stores them in state with the `useState` hook, and updates the circle's `cx` and `cy` attributes on every move. The `useCallback` hook memoizes the event handler for efficiency, while the initial mouse position is centered on the screen. Rendering uses ReactDOM to mount the component into the page.

MMarcus

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 single circle in an SVG viewport tracks the user's mouse in real time, following its position across the full screen. Built with React, the app uses the `useState` hook to store the current mouse coordinates and the `useCallback` hook to update them via the SVG `onMouseMove` event handler. The circle’s `cx` and `cy` attributes are bound directly to this state, causing a re-render on every pointer movement. The rendering approach is purely declarative, with the circle’s radius fixed at 30 pixels.

AAhmad Butt

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 circle follows the mouse cursor across a full-screen SVG canvas, updating its position in real time in response to pointer movement. The React app tracks the mouse coordinates via the `onMouseMove` event handler and stores them in state with `useState`, while `useCallback` memoizes the handler for efficiency. The circle’s center is rendered at the cursor’s `clientX` and `clientY` coordinates, with a fixed radius of 30 pixels, using React and ReactDOM to manage the SVG output.

SSean Lin

Mouse Follower

A circle follows the mouse cursor across a full-screen SVG canvas, updating its position in real time as the pointer moves. The React app uses the `useState` hook to store the current mouse coordinates and the `useCallback` hook to define a `handleMouseMove` event handler, which reads `clientX` and `clientY` from the synthetic event. The circle, with a fixed radius of 30 pixels, is rendered via SVG’s `<circle>` element, whose `cx` and `cy` attributes are bound to the state, and the window’s dimensions determine the viewport size.

PPaul B

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