Ok, I did some research and here is the problem. It seems like it has some
issues with the daylight time change.
var x = new Date();
x.set('date', 1).clearTime();
for (i=0; i<12; i++) {
console.log(x.increment('month'));
}
Mon Jun 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
Wed Jul 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
Sat Aug 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
Tue Sep 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
Thu Oct 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
Sun Nov 01 2009 00:00:00 GMT-0700 (PDT) $family=Object
*Mon Nov 30 2009 23:00:00 GMT-0800 (PST) $family=Object*
*Wed Dec 30 2009 23:00:00 GMT-0800 (PST) $family=Object*
*Sat Jan 30 2010 23:00:00 GMT-0800 (PST) $family=Object*
*Tue Mar 02 2010 23:00:00 GMT-0800 (PST) $family=Object*
*Sat Apr 03 2010 00:00:00 GMT-0700 (PDT) $family=Object*
*Mon May 03 2010 00:00:00 GMT-0700 (PDT) $family=Object*
In order to fix this issue, since I only care about the date and not the
time, I set the time to noon, so I always get the 1st of the month as
expected:
var x = new Date();
x.set('date', 1).clearTime().set('hours', 12);
for (i=0; i<12; i++) {
console.log(x.increment('month'));
}
Mon Jun 01 2009 12:00:00 GMT-0700 (PDT) $family=Object
Wed Jul 01 2009 12:00:00 GMT-0700 (PDT) $family=Object
Sat Aug 01 2009 12:00:00 GMT-0700 (PDT) $family=Object
Tue Sep 01 2009 12:00:00 GMT-0700 (PDT) $family=Object
Thu Oct 01 2009 12:00:00 GMT-0700 (PDT) $family=Object
Sun Nov 01 2009 11:00:00 GMT-0800 (PST) $family=Object
Tue Dec 01 2009 11:00:00 GMT-0800 (PST) $family=Object
Fri Jan 01 2010 11:00:00 GMT-0800 (PST) $family=Object
Mon Feb 01 2010 11:00:00 GMT-0800 (PST) $family=Object
Mon Mar 01 2010 11:00:00 GMT-0800 (PST) $family=Object
Thu Apr 01 2010 12:00:00 GMT-0700 (PDT) $family=Object
Sat May 01 2010 12:00:00 GMT-0700 (PDT) $family=Object
I'll take a look at the source code and see if I can figure out a patch for
this :)
On Tue, May 26, 2009 at 3:53 PM, Eneko Alonso <[email protected]>wrote:
> I'm using Date.increment('month') from Mootools More 1.2.2.2 and I just
> found it does not work as I expected.To me, add month means the day wont
> change. Thus, if you add a month to January 1st 2009, it should return
> February 1st 2009. But, if you keep adding 1 month at a time you will find
> something like November 30th 2009.
>
> Either there is a bug on the function or is adding 30 days every time,
> instead of a month.
>
> I haven't tested for end dates, but I'll understand these are more
> complicated.
>
>
> Whatever is the actual method implemented to increment months, it should be
> better explained on the documentation:
> http://mootools.net/docs/more/Native/Date
>
>
>
> Thanks :)
>
