regex on date

[Ike]

If I am requiring a date be entered as YYYY-MM-DD.....why then....

var validformat=/^\d{4}\[-]\d{2}[-]\d{2}$/ //Basic check for format validity

if (!validformat.test(input.value))
//I come here for 2006-11-10.....why?

Thanks, Ike

[Martin Honnen]

Ike wrote:

If I am requiring a date be entered as YYYY-MM-DD.....why then....

var validformat=/^\d{4}\[-]\d{2}[-]\d{2}$/ //Basic check for format validity

I think you want
/^\d{4}\-\d{2}\-\d{2}$/

--

Martin Honnen
http://JavaScript.FAQTs.com/

[Evertjan.]

Martin Honnen wrote on 09 okt 2006 in comp.lang.javascript:

>

Ike wrote:

>If I am requiring a date be entered as YYYY-MM-DD.....why then....

var validformat=/^\d{4}\[-]\d{2}[-]\d{2}$/ //Basic check for format
validity

I think you want
/^\d{4}\-\d{2}\-\d{2}$/

no need for eacaping the - outside [].

shorter:

/^\d{4}(-\d{2}){2}$/

/^\d{4}(-\d\d){2}$/

one could test less:

/^\d{4}.{6}$/

or more:

/^[12]\d{3}-[01]\d-[0123]\d$/

or even more:

/^[12]\d{3}-(0[1-9]|1[012])-(0[1-9]|[12]\d|3[01])$/

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[Dr John Stockton]

JRS: In article <45***********************@newsspool2.arcor-online.net>,
dated Mon, 9 Oct 2006 18:51:37 remote, seen in
news:comp.lang.javascript, Martin Honnen <ma*******@yahoo.deposted :

>Ike wrote:

>If I am requiring a date be entered as YYYY-MM-DD.....why then....

var validformat=/^\d{4}\[-]\d{2}[-]\d{2}$/ //Basic check for format validity

^^ ^ ^ ^ superfluous
| error

>
I think you want
/^\d{4}\-\d{2}\-\d{2}$/

/^\d{4}-\d\d-\d\d$/ is adequate.
In the past, the newsgroup has accepted

nD = new Date(Y, M-1, D)
OK = (nD.getMonth()+1 == M) && (nD.getDate() == D)

as the (joint?) best way to validate Y M D with a Date Object.

It occurs to me that if one has used Mt = String.match(RegExp) to
check the pattern of the input string, and D = +Mt[3] etc., then one
only needs
OK = nD.getMonth()+1 == M

OK ?

--
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