[Bug 14890] For invalid Date, the terminology here seems to be "undefined" insted of "null" according to WebIDL, and the ECMAScript "null" value should never reach here according to the IDL description of attribute "valueAsDate". For readiblity, I suggest we just s/i from bugzilla@jessica.w3.org on 2012-01-25 (public-html-bugzilla@w3.org from January 2012)

From: <bugzilla@jessica.w3.org>
Date: Wed, 25 Jan 2012 23:20:07 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1RqC8N-0003Ak-Ry@jessica.w3.org>

https://www.w3.org/Bugs/Public/show_bug.cgi?id=14890

Ian 'Hixie' Hickson <ian@hixie.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Ian 'Hixie' Hickson <ian@hixie.ch> 2012-01-25 23:20:06 UTC ---
(new Date("bogus")) is exactly equivalent to (new Date(NaN)).

It's true that the spec didn't define how valueAsDate should handle a Date with
a NaN time value. I have now fixed that. Thanks for the bug report!

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Received on Wednesday, 25 January 2012 23:20:14 UTC