In such a case you must combine the method call with the on Success callback.
Validate qty of checkboxes in a group (same name) have been checked, using min, max or range.
Only the first checkbox element in the group needs to have the validation attributes added.
The following form contains some typical validators needed in a registration form.
This j Query plugin has support for a lot more validation functions, you find them all in the menu to the right.
Read the setup guide if you want to know which configuration options that are available when setting up the validation.