Re: How to feature test for window.ActiveXObject?

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Message-ID	<4098838.pUHI31MDFG@PointedEars.de> (permalink)
From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To	Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Date	Fri, 22 Nov 2013 00:32:28 +0100
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Subject	Re: How to feature test for window.ActiveXObject?
Newsgroups	comp.lang.javascript
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Christoph Michael Becker wrote:

> Thomas 'PointedEars' Lahn wrote:
>> You could do
>> 
>>   try
>>   {
>>     ActiveXObject
>>   }
>>   catch (e)
>>   {
>>     /* no ActiveXObject */
>>   }
>> 
>> but since you have to do
>> 
>>   var o = null;
>> 
>>   try
>>   {
>>     o = new ActiveXObject("…");
>>   }
>>   catch (e)
>>   {
>>     // …
>>   }
>> 
>> anyway, the former does not make much sense.  It might even throw an
>> exception even if “ActiveXObject” is supported because the method was
>> used wrong.  It walks like a native method, but we can see in the MSDN
>> Library that it quacks rather strangely.
> 
> ACK.

On second thought, if the former approach does work in IE 10 and 11, or if 
you do know another approach that works there, please tell.  I can then test 
whether it works in previous versions also, and we may eventually not only 
have a way to work around the recent Microsoft nonsense, but also to detect 
support without the need for a call as constructor (which is also needed for 
the ES Matrix).

-- 
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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