facetwp modify slider label

custom-hooks.php

<php
/** add js to wp_head to modify slider **/	 
	 
add_action( 'wp_head', function() { ?>
	<script>
        (function($) {
            $(function() {
                FWP.hooks.addAction('facetwp/set_label/slider', function($this) {
                    var label = $this.find('.facetwp-slider-label').html();
	                var regex = /(^[^\s]+)/;
                    label = label.replace(regex,"<span class=\"slider-min\">$1</span>");
                    $this.find('.facetwp-slider-label').html(label);
                });
            });
        })(jQuery);
	</script>
<?php }, 100);