Well, toISODate(isoDate(s)) == s is an invariant for (only) correctly
formatted dates.
validatedISODate = function (s) {
var d = isoDate(s);
if (toISODate(d) != s) {
return null;
}
return d;
};
-bob
On 12/11/06, Prathap(பிரதாப் நிர்மல்) <[EMAIL PROTECTED]> wrote:
> The user selects the date using a JavaScript based calendar, which returns a
> date in ISO format. The returned value is populated in a text box, which the
> user can edit. The problem here is the user will be able to edit the date
> that is populated back in the text box. So I am looking for options to
> validate my date before the user can submit the form.
>
> Thanks
>
> ~
> Prathap
>
> On 12/11/06, Bob Ippolito <[EMAIL PROTECTED]> wrote:
> > The profile of ISO 8601 it intends to support definitely does require
> hyphens.
> >
> > http://www.w3.org/TR/NOTE-datetime
> >
> > The JavaScript Date object doesn't handle ISO 8601 style dates at all,
> > at least in its constructor:
> > >>> new Date("2006")
> > Invalid Date
> > >>> new Date("2006-11")
> > Invalid Date
> > >>> new Date("2006-11-23")
> > Invalid Date
> >
> > While isoDate could attempt to validate dates, it would add a lot of
> > complexity to the code and probably not solve any problems that people
> > actually have. Did you actually run into a situation where date
> > validation would've saved you time or effort, or were you simply
> > throwing invalid dates at the function to see what would happen?
> >
> > The only real need I see for validation would be if it was intended
> > for user input.. but you'd want something more flexible for user
> > input. ISO style dates are for machines.
> >
> > -bob
> >
> > On 12/11/06, Prathap(பிரதாப் நிர்மல்) <[EMAIL PROTECTED]> wrote:
> > > Hi Bob,
> > > Thanks for the reply. But it will be great if we can do something more
> > > that what Javascript Date object does. Also the isoDate can't be used
> with
> > > simple formats like isoDate('20061123') whereas the default Date can be.
> Is
> > > there any reason on why the isoDate function is restricted to dates
> > > separated by '-' character? The 8601 doesn't seem to specify any such
> > > restrictions. Thanks again for your input and for such a great library!
> > >
> > > ~
> > > Prathap
> > >
> > > On 12/11/06, Bob Ippolito < [EMAIL PROTECTED]> wrote:
> > > > It's not a bug, that's what the JavaScript Date object does. I don't
> > > > see a particularly good reason to "fix" this.
> > > >
> > > > -bob
> > > >
> > > >
> > > > On 12/11/06, Nirmal <[EMAIL PROTECTED] > wrote:
> > > > >
> > > > > Hi All,
> > > > > I noticed that the date library in MochiKit behaves differently,
> > > > >
> > > > > isoDate('2006-34-34') gives Mon Nov 03 2008 00:00:00 GMT+0530
> (India
> > > > > Standard Time)
> > > > >
> > > > > The month and date values above are invalid. But it ads up to the
> date
> > > > > value, its like find the date of the day that is 34 months and 34
> days
> > > > > after 2006-Jan'01. But the ISO 8601 spec specifies a limit on the
> > > > > values ->
> > > > >
> > > > > MM = two-digit month (01=January, etc.)
> > > > > DD = two-digit day of month (01 through 31)
> > > > >
> > > > > So is this a bug in mochikit? I will be happy to fix it.
> > > > >
> > > > > ~
> > > > > Prathap
> > > > >
> > > > >
> > > > >
> > > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > பிரதாப் நிர்மல்
> > > Web Applications Engineer
> > > Google Online India Pvt. Ltd.
> > > 7th Floor, Jayabheri Silicon Towers,
> > > Madhapur Road, Kondapur
> > > Hyderabad - 500 032
> > > mobile : +91 99856 34636
> >
>
>
>
> --
>
> பிரதாப் நிர்மல்
> Web Applications Engineer
> Google Online India Pvt. Ltd.
> 7th Floor, Jayabheri Silicon Towers,
> Madhapur Road, Kondapur
> Hyderabad - 500 032
> mobile : +91 99856 34636
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