on scroll top jquery code example

Example 1: scroll to top jquery

window.scrollTo({top: 0, behavior: 'smooth'});

reference : https://stackoverflow.com/questions/15935318/smooth-scroll-to-top

Example 2: scrool to top jquerry

$("a[href='#top']").click(function() {
  $("html, body").animate({ scrollTop: 0 }, "slow");
  return false;
});

Example 3: jquery get document scrolltop

var top = ($(window).scrollTop() || $("body").scrollTop());