Ah, should've tried it before posting. This should work:
jQuery.validator.addMethod ('ccard', function (value, elem) {
return (jQuery.validator.methods.creditcard.call(this, value, elem));
}, 'Enter a valid credit card number');
Jörn
On Thu, May 15, 2008 at 5:09 PM, Gordon <[EMAIL PROTECTED]> wrote:
>
> I tried writing a test function that just calls the existing function
> so it should give the same results.
>
> jQuery.validator.addMethod ('ccard', function (value, elem)
> {
> return (jQuery.validator.methods.creditcard (value, elem));
> }, 'Enter a valid credit card number');
>
> Unfortunately it didn't work, it just caused firebug to log an
> error.
>
> "this.optional is not a function"
>
> On May 15, 3:21 pm, "Jörn Zaefferer" <[EMAIL PROTECTED]>
> wrote:
>> You can access the built-in method directly via
>> jQuery.validator.methods.creditcard. You have to provide two
>> arguments, the current value and the element to validate.
>>
>> var element = $(...)[0];
>> if (jQuery.validator.methods.creditcard(element.value, element))
>> // valid
>> else
>> // invalid
>>
>> Jörn
>>
>> On Thu, May 15, 2008 at 4:14 PM, Gordon <[EMAIL PROTECTED]> wrote:
>>
>> > I want to extend the provided cxreditcard method to count a sequence
>> > of * characters followed by 4 digits as a valid value. I need this for
>> > a form where the credit card can be populated from a previously saved
>> > value. Naturally we don't want to display the full number for
>> > security reasons but we need for the user to be able to see the last
>> > four digits.
>>
>> > My idea was to write a new ccard method that calls the pre-existing
>> > creditcard method. If that method returns true then return true. If
>> > it returns false then check the field value against a regex /\*+[0-9]
>> > {4,4}/.
>>
>> > How can I write a custom method that makes use of a built in
>> > method?
>
