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Editorial Team
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Editorial Team
Asked: May 26, 20262026-05-26T10:28:36+00:00 2026-05-26T10:28:36+00:00

So I have been working on a map system for Canvas, it all works

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So I have been working on a map system for Canvas, it all works fine in Chrome.

But Firefox and IE9 refuse to draw anything to the canvas… I can’t seem to work out why.
The FPS count in the document title still works ok.

Here is my code so far:
http://www.barriereader.co.uk/tmp/neuroTile/

Has anyone seen this sort of non-error before? Where only Chrome draws on the canvas?

Thanks!!

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  1. Editorial Team
    Editorial Team
    2026-05-26T10:28:36+00:00Added an answer on May 26, 2026 at 10:28 am

    Start by looking at the JavaScript console for error messages. It will tell you that document.width and document.height are not defined in IE9 or Firefox.

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