function progress() { var windowScrollTop = jQuery(window).scrollTop(); var docHeight = jQuery(document).height(); var windowHeight = jQuery(window).height(); var progress = (windowScrollTop / (docHeight - windowHeight)) * 100; var $bgColor = progress > 99 ? 'var(--wdtPrimaryColor)' : 'var(--wdtPrimaryColor)'; jQuery('.wdt-horizontal-progress-bar .progress-bar').width(progress + '%').css({ backgroundColor: $bgColor }); } progress(); jQuery(document).on('scroll', progress);