CFFORM regex Problem

Question

I'm trying to restrict a form value to something like mm/dd
as follows:
<cfinput type="text" name="AnStartDate#i#"
id="AnStartDate#i#" validate="regular_expression"
pattern="^[0-1]?[0-9]/[0-3]?[0-9]*$" size="4" maxlength="5"
validateat="onSubmit" message="Please enter all annual start dates
as mm/dd" />
The form loops to give a total of 5 rows of text entries.
When the page loads, Firefox's Javascript console shows the
following error:
Error: syntax error
Source File:
http://localhost/mti/orders/refurb/edit_duty.cfm?type=Argos%2FGPS%20Solar%20PTTs&prodID=79
Line: 196, Column: 92
Source Code:
if (!_CF_checkregex(_CF_this['AnStartDate1'].value,
/^[0-1]?[0-9]/[0-3]?[0-9]*$/, true))
with the arrow indicating the error is right before the
"true" at the end of the statement.
Since this is in the JS generated by CF, is there a problem
in the regular expression? I want the initial digit of the month or
day to be optional, so users can type, "6/4" rather than "06/04"
but it needs to be no more that 5 characters, and look like a date
without a year. Right now, because of the error, anything is
accepted.

Answer 1

You need to escape your "/".
^[0-1]?[0-9]\/[0-3]?[0-9]*$
Just an FYI, the only thing this is validating is that you
have 1 or 2 digits who's value is lte 19 followed by a "/" followed
by one or 2 digits who's value is lte 39. The values 19/39 or 00/00
would pass the test despite the fact they're far from being a valid
date.