Check Delivery Postcode JS

gistfile1.js

$('#checkDelivery').submit(function() {
	var data = $(this).serializeArray(),
	    postcodes = [2015,2019,2015,2018,2011];
	jQuery.each(data, function(i, field){
		if ( $.inArray(parseInt(field.value), postcodes) != -1 ) {
			$('#delivery_options').html('<p>Yes, we deliver to your area!</p>');
		}
		else {
			$('#delivery_options').html('<p>Unfortunately, we do not deliver to your area.</p>');
		}
	});
	return false;
});