jQuery validate plug in - validating hidden elements only when visible

I have a form that has a "Is you billing address the same as your shipping address" field. If the user clicks the radio button "No" the hidden ul#billingAddress is shown. The fields contained in ul#billingAddress are required if it is visible, that is if the ul has display:block.

How do I write a custom addMethod for jquery validate.js that requires those only if the field is visible? This is what I have that isn't working.

$.validator.addMethod ("BillingSameAsShipping", function(value, element) {
   var billingFields = ['billingAddress1','billingAddress2','billingCity','billingState','bilingZip']
   if ($("#billingAddress").is('visible') && billingFields.val('') {
       return false;
   } else 
       return true;
 }, "Please fill in the required billing information" );

This, obviously is jacked. I need to make it work for each one that开发者_运维技巧 is in the var.

Thanks!

The problem with the visible check is this part: .is('visible') it needs to be: .is(':visible') to use the :visible selector.

As an alternative, you can use the ignore option to do what you want a bit easier, like this:

$("#myForm").validate({
  //other options
  ignore: ':hidden'
});

This approach lets you use the standard required rules if you want.