facetwp fselect levels

<?php
/** adds css class to designate level in hierarcy fselect **/
add_action( 'wp_footer', function() {
	?>
    <script>
        (function($) {
			$(document).on('facetwp-loaded', function() {
				$.each( $( ".fs-option" ), function() {
					var label = $(this).children(".fs-option-label").first().html();
					if ( -1 !== label.indexOf("    ") ) {
						$(this).addClass( 'third' );
					} else if ( -1 !== label.indexOf("  ") ) {
						$(this).addClass( 'second' );
					} else {
						$(this).addClass( 'first' );
					}
				} )
			});
		})(jQuery);
    </script>
	<?php
}, 100 );