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What exactly is the replacement for getDefaultComputedStyle?

From: Boris Zbarsky <bzbarsky@mit.edu>
Date: Tue, 02 Sep 2014 17:07:26 -0400
Message-ID: <5406318E.9030605@mit.edu>
To: www-style list <www-style@w3.org>
At one point we agreed to add Element.getDefaultComputedStyle to CSSOM 
to address the "what is the default (user+ua) value for this element for 
a given CSS property?" use case.

It looks like it's been removed from CSSOM at some point, but I see 
nothing replacing it.  Certainly none of the things on 
http://dev.w3.org/csswg/cssom/#getstyleutils cover this use case.  Am I 
just missing something?

The lack of such an API is causing libraries like jQuery to rely on 
weird display:none iframe hacks in an attempt to gather this sort of 
information.  And even with those hacks, if user/UA stylesheets have 
media query dependent styles there's no way for them to get correct answers.

-Boris
Received on Tuesday, 2 September 2014 21:07:56 UTC

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