I need to create a regular expression for a date field that works only
in the following format MM/DD/YYYY with the / in the format. No other
format can be inputted into the field. I need 2 numbers for MM 2
Numbers for DD and 4 numbers for YYYY. If the users enter 1 number for
month, 1 for day he should get an alert. Thanks.
I have this code and thought it was working but it is not. Any help
would be great. Thanks
Code:
var RegExPattern = /(\d{1,2})\W(\d{1,2})\W(\d{4})/; 6 1864
MrHelpMe <cl********@hotmail.comwrote:
>I need to create a regular expression for a date field that works only in the following format MM/DD/YYYY with the / in the format. No other format can be inputted into the field. I need 2 numbers for MM 2 Numbers for DD and 4 numbers for YYYY. If the users enter 1 number for month, 1 for day he should get an alert. Thanks.
I have this code and thought it was working but it is not. Any help would be great. Thanks
Code: var RegExPattern = /(\d{1,2})\W(\d{1,2})\W(\d{4})/;
The {1,2} elements tell it to accept one or two of the preceding
element. You say you want only two digits. I'd do something like this:
var RegExPattern = !\d{2})/\d{2})/\d{4}!
Using ! to delimit the RE instead of /, since you have slashes within
the RE.
--
Tim Slattery
MS MVP(DTS) Sl********@bls.gov http://members.cox.net/slatteryt
Tim Slattery wrote on 15 mei 2007 in
microsoft.public.inetserver.asp.general:
>>var RegExPattern = /(\d{1,2})\W(\d{1,2})\W(\d{4})/;
The {1,2} elements tell it to accept one or two of the preceding
element. You say you want only two digits. I'd do something like this:
var RegExPattern = !\d{2})/\d{2})/\d{4}!
Using ! to delimit the RE instead of /, since you have slashes within
the RE.
No, that !! is not part of j[ava]script regex
and those strange leftover )s?
Try:
if (/^\d{2}\/\d{2}\/\d{4}$/.test(t)) .....
or
if (/^(\d\d\/\){2}\d{4}$/.test(t)) .....
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)
"Evertjan." <ex**************@interxnl.netwrote:
>No, that !! is not part of j[ava]script regex and those strange leftover )s?
OOP didn't specify what language, this being an ASP group, I assumed
VBScript. Maybe the trailing semicolon should have meant something.
I looked at the MSDN documentation for REs, and didn't see anything
about delimiting them. They use the same example over and over, which
is a SUB getting an argument and simply using that argument for a
delimiter. No discussion of enclosing the pattern in quotes or using
slashes that I could find.
I did wonder about alternate delimiters. That works in Perl and other
Unix-like contexts, but I guess not here. IMHO, it would simplify some
things if it did.
The leftover parens were a mistake.
--
Tim Slattery
MS MVP(DTS) Sl********@bls.gov http://members.cox.net/slatteryt
On May 16, 9:22 am, Tim Slattery <Slatter...@bls.govwrote:
"Evertjan." <exjxw.hannivo...@interxnl.netwrote:
No, that !! is not part of j[ava]script regex
and those strange leftover )s?
OOP didn't specify what language, this being an ASP group, I assumed
VBScript. Maybe the trailing semicolon should have meant something.
I looked at the MSDN documentation for REs, and didn't see anything
about delimiting them. They use the same example over and over, which
is a SUB getting an argument and simply using that argument for a
delimiter. No discussion of enclosing the pattern in quotes or using
slashes that I could find.
I did wonder about alternate delimiters. That works in Perl and other
Unix-like contexts, but I guess not here. IMHO, it would simplify some
things if it did.
The leftover parens were a mistake.
--
Tim Slattery
MS MVP(DTS)
Slatter...@bls.govhttp://members.cox.net/slatteryt
Hello again everyone and thanks for the replies. Evertjan, I tried
what you recommended and received errors saying t was undefined.
However, after looking at this again I did manage to get this to
work. I expanded on my reg expressions and came up with the
following. If anyone see's anything wrong with this that I may have
overlooked please let me know.
/(\d{2})\W(\d{1,2})\W(\d{4})/
Thanks again.
MrHelpMe wrote on 16 mei 2007 in microsoft.public.inetserver.asp.general:
Hello again everyone and thanks for the replies. Evertjan, I tried
what you recommended and received errors saying t was undefined.
However, after looking at this again I did manage to get this to
work. I expanded on my reg expressions and came up with the
following. If anyone see's anything wrong with this that I may have
overlooked please let me know.
/(\d{2})\W(\d{1,2})\W(\d{4})/
It is wrong
1- if you specified the second number to have two characters
{2} in stead of {1,2}
try:
/(\d{2})\W(\d{2})\W(\d{4})/
2- if you specify not to have unneccesaty characters in the regex:
no need to use ()
try:
/\d{2}\W\d{2}\W\d{4}/
3- if you want only / as a delimiter
just escape the / by \/
try:
/\d{2}\/\d{2}\/\d{4}/
or:
/(\d\d\/\){2}\/\d{4}/
4- and because now the string 'qwert00/00/0000 asdfg'
will test true, you will have to insert start ^ and end $ markers:
try:
/^(\d\d\/\){2}\/\d{4}$/
=== As you specified jscript in this Asp NG
>>Code: var RegExPattern = /(\d{1,2})\W(\d{1,2})\W(\d{4})/;
by using var and ;
I suggest you use:
if ( /^(\d\d\/\){2}\/\d{4}$/.test(str) ) doWhatYouWantIfTrue();
=== I suggest you use international valid date strings like
yyyy-mm-dd or yyyy/mm/dd
=== But if you want only real dates to test true,
look in the archive of comp.lang.javascript
for instance here [but all over that NG]:
<http://tinyurl.com/2hj4zw>
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)
Tim Slattery wrote on 16 mei 2007 in
microsoft.public.inetserver.asp.general:
"Evertjan." <ex**************@interxnl.netwrote:
>>No, that !! is not part of j[ava]script regex and those strange leftover )s?
OOP didn't specify what language, this being an ASP group, I assumed
VBScript. Maybe the trailing semicolon should have meant something.
MrHelpMe wrote on 15 mei 2007 in microsoft.public.inetserver.asp.general:
Code:
var RegExPattern = /(\d{1,2})\W(\d{1,2})\W(\d{4})/;
The giveaway was the "var" plus that in this ASP NG I would primarily
expect vbscript or jscript.
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress) This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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