If I wanted this to also validate that there were 5 digits that were only numbers in the zip code field and at least 10 digits with no letters other than () or - in the phone number field how would I add that into this code? Thanks!
if (jQuery('#first_name').val() !== '' && jQuery('#last_name').val() !== '' && jQuery('#zip_code').val() !== '' && jQuery('#phone_number').val() !== '') {
jQuery(".home_step_two .next_incomplete").hide();
jQuery(".home_step_two .next").show();
} else {
jQuery(".home_step_two .next").hide();
jQuery(".home_step_two .next_incomplete").show();
}