Re: How to feature test for window.ActiveXObject?

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From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To	Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Subject	Re: How to feature test for window.ActiveXObject?
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Michael Haufe (TNO) wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Depends.  try…catch at least is the only reliable way to determine
>> whether a host object of a certain class (sic!; as in CLSID) can be
>> successfully created when “ActiveXObject” is called as a constructor
>> where try…catch is supported (that would apply to these versions of
>> JScript).
> 
> An alternative which still seems to work:
> 
> <!doctype html>
> <html lang="en" dir="ltr">
>     <head>
>         <meta charset="utf-8">
>         <title>clsid test</title>
>     </head>
>     <body>
>         <object id="wmv" width="100%" height="100%"
>         classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6">
>         </object>
>         <object id="xhr" width="100%" height="100%"
>         classid="CLSID:F5078F35-C551-11D3-89B9-0000F81FE221">
>         </object>
>         <script type="text/javascript">
>             var wmv = document.getElementById("wmv"),
>                 xhr = document.getElementById("xhr");
>         </script>
>     </body>
> </html>
> 
> The first is windows media player, the second is Msxml2.XMLHTTP.3.0

Curious.  The “classid” attribute is not listed under “content attributes”, 
but it is ascribed meaning in the prose:

<http://www.w3.org/TR/2012/CR-html5-20121217/embedded-content-0.html#the-object-element>

This has not changed in the latest Editor's Draft (22 November 2013):

<http://www.w3.org/html/wg/drafts/html/CR/embedded-content-0.html#the-object-element>

However, I do not see how that could be be used to detect support for a 
certain COM class.  The element is there no matter whether the class is 
supported.  Besides, does there have to be a CLSID for each server type?  
What about non-HTML use?

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

Thread

How to feature test for window.ActiveXObject? Christoph Michael Becker <cmbecker69@arcor.de> - 2013-11-16 20:24 +0100
  Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-17 00:08 +0100
    Re: How to feature test for window.ActiveXObject? Christoph Michael Becker <cmbecker69@arcor.de> - 2013-11-18 13:25 +0100
      Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-18 18:52 +0100
        Re: How to feature test for window.ActiveXObject? Christoph Michael Becker <cmbecker69@arcor.de> - 2013-11-21 23:44 +0100
          Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-22 00:32 +0100
      Re: How to feature test for window.ActiveXObject? Martin Honnen <mahotrash@yahoo.de> - 2013-11-18 19:29 +0100
        Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-18 19:35 +0100
    Re: How to feature test for window.ActiveXObject? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2013-11-21 19:13 -0800
      Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-22 11:56 +0100
        Re: How to feature test for window.ActiveXObject? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2013-11-22 06:33 -0800
          Re: How to feature test for window.ActiveXObject? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-22 15:51 +0100
            Re: How to feature test for window.ActiveXObject? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2013-11-22 07:44 -0800
  Re: How to feature test for window.ActiveXObject? JJ <duh@nah.meh> - 2013-11-17 07:27 +0700
    Re: How to feature test for window.ActiveXObject? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2013-11-21 18:38 -0800

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