How do I shorten the length of my field and only allow numeric characters

[Cupcake]

I have a field on a catalog form. The field is requesting the last four digits of the SSN # or Personal ID #. Today the field is setup as a single line text field, but I want to do the following:

a) make the field size = 4

b) I only want to allow that field to have numeric characters

I want to ensure that when I shorten the field size that I am only shortening it for this variable.

Thanks,

Karen

[joshua_bice]

That's what I was trying to do in my first response, but I lack tons of experience with regex. Thanks, Greg!

[Cupcake]

Hi Greg and Joshua,

        I am not sure what changed but this is having some issues. I went to test this field.

It allows me to enter the 4 digits, but the issue is even if it is 4 numbers it still asks me to enter a valid PIN and will not allow me to go any further.

[Greg42]

Hi Karen,

If you could show us how your code looks like that tests this field that would help.

Cheers

Greg

[Cupcake]

Good morning Greg,

        Here is my script. I did an onChange script (see below). I deactivated it temporarily.

Thanks,

Karen

[Greg42]

Hi Karen,

Remove forward slashes from RegExp.

Do this:

var check = new RegExp("^[0-9][0-9][0-9][0-9]$");

That should yield correct true/false results of your regex tests.

Cheers

Greg