JS1k: The JavaScript code golfing competition

2019 - Ten Year Js1k!

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Canvas element settings

Canvas will be (automagically) max 100% viewport but may be smaller if you desire it...

If a viewport is smaller than the size given, it is set to 100%. Ratio can be kept.

These are intended for heavy demos that don't want to render a huge fullscreen canvas.

(if smaller than viewport, in pixels, 0=100%)
(if smaller than viewport, in pixels, 0=100%)
(when overridden above)
(if not 100%)
(restart onorientationchange? because new dimensions)

(describe your demo, up to first line break is shown in demo and overview)
(optional, uncompressed commented source code, max 10k, only js)
(private message to me, unpublished, optional)

Future JS1k merchandise (like tshirts) might show a screenshot of your demo. It's okay to un-check this if you don't want your demo used that way. Only I will see this.

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All submissions are moderated. Submissions become public. That's all, folks!