jQuery: scroll to top

gistfile1.txt

(function ($) {    
	// display button after 60px scrolled
	const showAtOffset = 60;
	const $backToTop = $('.scroll-top-wrapper');

	// Show and hide the Button
	$(document).on( 'scroll', function(){
		($(window).scrollTop() > showAtOffset) ? $backToTop.addClass('show'): $backToTop.removeClass('show');
	});

	// Scroll top Top
	$backToTop.on('click', 	function() {
		$('html, body').animate({scrollTop: 0}, 500, 'linear');
	});
}(window.jQuery));