i have created a 2 validation functions to be added to the additional-methods validation plugin script

these function validate postal code and zip code fields

one validates both postal code and zip code in a field

and the other one just validates postal code

jQuery.validator.addMethod("postalzip", function(value, element) {

return this.optional(element) || /^\\d{5}(-\\d{4})?$)|(^[ABCEGHJKLMNPRSTVXY]{1}\\d{1}[A-Z]{1} *\\d{1}[A-Z]{1}\\d{1}$/.test(value);

}, "Your ZIP-code must be in the range 902xx-xxxx to 905-xx-xxxx OR your POSTAL CODE must be in the formart of A9A-9A9 or A9A9A9");

jQuery.validator.addMethod("postalcode", function(value, element) {

return this.optional(element) || /^[ABCEGHJKLMNPRSTVXY]{1}\\d{1}[A-Z]{1} *\\d{1}[A-Z]{1}\\d{1}$/.test(value);

}, "Your POSTAL CODE must be in the formart of A9A-9A9 or A9A9A9");