facetwp conditional scroll to top only on pager

<?php

/** scoll on loaded only if pager is the change in facet **/
add_action( 'wp_head', function() { ?>

    <script>
        (function($) {
            $(document).on('facetwp-refresh', function() {
                if ( FWP.soft_refresh == true ) {
                    FWP.enable_scroll = true;
                } else {
                    FWP.enable_scroll = false;
                }
            });
            $(document).on('facetwp-loaded', function() {
                if ( FWP.enable_scroll == true ) {
                    $('html, body').animate({ scrollTop: 0 }, 500);
                }
            });
        })(jQuery);
    </script>

<?php } );