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[CSSWG][css3-transitions] Updated WD of CSS Transitions

From: L. David Baron <dbaron@dbaron.org>
Date: Tue, 19 Nov 2013 22:44:09 +0800
To: www-style@w3.org
Message-ID: <20131119144409.GA12333@crum.dbaron.org>
The CSS WG has published an updated Working Draft of CSS


CSS Transitions allows property changes in CSS values to occur
smoothly over a specified duration. 

This contains a number of significant changes relative to the
previous working draft.  The most significant changes are in two

 (1) The specification now defines how transitions start much more
 clearly.  This will require updates to all shipping
 implementations, which all disagree, and most or all of which had
 behaviors that even their implementors thought were undesirable.

 (2) The rules for faster reversing of partially completed
 transitions now match Gecko's shipping behavior, rather than an
 alternative proposal that involved reversing timing functions.

We're particularly interested in feedback on these changes, but also
in other feedback about the spec.

I'm hoping that there won't be a need for any further changes of
this magnitude, and that the specification can go to last call
relatively soon.  I'm aware that there are some issues that need to
be addressed before that happens, but I'm expecting that the changes
needed for these issues will be smaller.  Any proposals for new
features will almost certainly be postponed to the next level of the

A more complete list of significant changes since the last working
draft is:


Please send any comments to this mailing list, <www-style@w3.org>, and 
please, prefix the subject line with


(as I did on this message).

For the CSS WG,

𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                          https://www.mozilla.org/   𝄂
             Before I built a wall I'd ask to know
             What I was walling in or walling out,
             And to whom I was like to give offense.
               - Robert Frost, Mending Wall (1914)

Received on Tuesday, 19 November 2013 14:44:36 UTC

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