How to validate US ZIP code using jQuery Validation plugin

Question

I am using the jQuery Validation plugin for validating my form.

I want to validate the zip code as per US ZIPCode format :-

> 12345
> 12345-678         


        

Answer 1

You can define a custom validator:

jQuery.validator.addMethod('zipcode', function(value, element) {
  return this.optional(element) || !!value.trim().match(/^\d{5}(?:[-\s]\d{4})?$/);
}, 'Invalid zip code');

Then use it like this