facetwp empty facet add text

<?php
/** check facets and add a message if empty **/
add_action( 'wp_head', function() { ?>
	<script>
		(function($) {
			$(function() {
				FWP.hooks.addAction('facetwp/loaded', function() {
					$('.facetwp-facet').each(function() {
						var content = $(this).html();
						if ('' == content) {
							$(this).append("No Results");
						}				
					});
				}, 1000 );
			});
		})(jQuery);
	</script>
<?php }, 100 );