[Bug 16022] Actually the required tag of controls are rendered as "required" attribute of html 5 elements. Then the validation will be controlled by your browser. Unfortunately "validation group" or something like that has not been introduced in html 5 (yet, and as f from bugzilla@jessica.w3.org on 2012-09-14 (public-html-bugzilla@w3.org from September 2012)

From: <bugzilla@jessica.w3.org>
Date: Fri, 14 Sep 2012 11:27:50 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1TCU3q-0003Ml-2e@jessica.w3.org>

https://www.w3.org/Bugs/Public/show_bug.cgi?id=16022

Robin Berjon <robin@w3.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |robin@w3.org
         Resolution|                            |INVALID

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Received on Friday, 14 September 2012 11:27:51 UTC