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Editorial Team
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Asked: 2026-06-02T03:18:33+00:00

This seems like a very elementary question, but I would like to go with

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This seems like a very elementary question, but I would like to go with it anyway.

My web app uses Mojarra + Primefaces, and it uses the p:chart element which renders as a canvas element, which I thought was an HTML5 feature. Yet when I view the source of my pages in the browser I get:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

instead of 

<!DOCTYPE html>

Firebug shows my charts are indeed rendered as canvas tags, so am I getting HTML5 or not?

If I am not, is there some setup parameter that I need to make it so?

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1 Answer

  1. Editorial Team

    Your document is being served as XHTML 1.0 Transitional (because that’s what your doctype says) but that doesn’t mean that you cannot use canvas element.

    Browsers try to render whatever you give them. If you give them XHTML 1.0 but you use canvas elements, it will try to render it. And most of the times it will do it well.

    Although probably your document is not valid according to W3C.

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