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Realistic JavaScript Sun
A responsive Canvas solar animation with plasma texture, sunspots, flares, corona rays, and orbiting energy.
JavaScript Canvas
JavaScript Canvas Animation Source Code
Explore JavaScript Canvas animation source code with responsive live previews, editable files, and project downloads.
What to check in these projects
- 01Scale the canvas for the device pixel ratio.
- 02Keep repeated drawing work inside requestAnimationFrame.
- 03Recalculate dimensions when the browser viewport changes.
Language
JavaScript Canvas
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JavaScript Canvas
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What these projects teach
JavaScript Canvas is suited to procedural visuals that redraw continuously, including particles, gradients, simulations, game effects, and animated backgrounds. These projects expose the complete drawing code, timing loop, resize handling, and performance decisions behind the live result.
A Canvas animation is easiest to understand as a sequence of drawing passes. The script clears or fades the previous frame, updates changing values, draws background elements, adds the main subject, and finishes with highlights or particles. Reading those passes in order helps connect each function to a visible part of the animation.
Learning outcomes
Skills you can practice
- Build a predictable requestAnimationFrame loop that separates value updates from drawing work and remains responsive to browser input.
- Use gradients, alpha blending, transforms, particles, and compositing to create depth without relying on external image assets.
- Scale the backing canvas for device pixel ratio while keeping its CSS size aligned with the available viewport.
- Balance visual detail with performance by controlling repeated allocations, particle count, blur, and high-resolution rendering cost.
Practical workflow
From preview to your own version
- 01Observe the live animation and list its background, subject, glow, texture, and particle layers.
- 02Locate the resize function, animation loop, state values, and drawing functions in the source.
- 03Tune one visual parameter in a local copy and watch how it affects frame clarity and motion.
- 04Test the result in normal and fullscreen previews at more than one viewport size before downloading it.
Common questions
JavaScript Canvas FAQs
Does JavaScript Canvas animation require a graphics library?
No. The projects in this collection use the standard browser Canvas 2D API with JavaScript. Shapes, gradients, particles, transforms, and compositing are generated in code without requiring a rendering framework or external visual asset package.
Why is requestAnimationFrame used for Canvas animation?
requestAnimationFrame asks the browser to schedule drawing near its next visual refresh. It pauses or reduces work when appropriate and is generally better aligned with browser rendering than a fixed timer that redraws regardless of display state.
How can I keep a Canvas animation sharp on phones?
Match the backing canvas to its displayed size and account for device pixel ratio, but cap excessive scaling to control cost. Recalculate dimensions after viewport changes and test particle, blur, and texture settings on a real mobile-sized preview.