[Bug 18787] New: Canvas fallback is not activated on script failure

https://www.w3.org/Bugs/Public/show_bug.cgi?id=18787

           Summary: Canvas fallback is not activated on script failure
           Product: HTML WG
           Version: unspecified
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HTML5 spec
        AssignedTo: erika.doyle@microsoft.com
        ReportedBy: peter.winnberg@gmail.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
                    public-html@w3.org


When the script that is responsible for drawing something onto a canvas element
fails to load (unable to download the file or syntax error) the fallback for
that canvas element is not activated. The specification only seems to cover how
fallback content should be handled when scripting is completely disabled and
when the canvas element is unsupported.

That the fallback content on the canvas element isn’t activated when the script
cannot be downloaded is also inconsistent with how fallback content is handled
on the img element. If the image associated with the img element cannot be
downloaded, the fallback is activated.

Is there a need to have an more explicit relationship between the drawing
method and the canvas element so failures like this can be detected?

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Received on Thursday, 6 September 2012 07:40:16 UTC