A Cursor-Reactive Constellation Background in Plain Canvas

📰 Dev.to · Reese Gerjekian

Create a cursor-reactive constellation background using plain Canvas and JavaScript without any libraries

intermediate Published 8 Jul 2026

Action Steps

Create a basic HTML structure with a Canvas element
Add CSS styles to position the Canvas and set its dimensions
Write JavaScript code to generate random nodes and lines between them
Use the mousemove event to update the node positions based on the cursor location
Animate the nodes and lines using the requestAnimationFrame function

Who Needs to Know This

Frontend developers and designers can benefit from this tutorial to create interactive and dynamic backgrounds for their web applications

Key Insight

💡 You don't need a library to create complex animations, plain Canvas and JavaScript can achieve impressive results

Key Takeaways

Create a cursor-reactive constellation background using plain Canvas and JavaScript without any libraries

Full Article

Those animated node fields (drifting points, thin lines between neighbors, the whole web nudged by your cursor) don't need a library. A small HTML and CSS shell, then a walk through the JavaScript that does the work.

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