显示滚动到顶部如果顶部！= 0

Posted 2021-02-24

If scrollTop isnt equal to 0 then show #toTop

//Hide/Show #toTop
  jQuery(window).scroll(function () {
    if (jQuery(this).scrollTop() != 0) {
      jQuery('#toTop').fadeIn();
    } else {
      jQuery('#toTop').fadeOut();
    }
  });
//Scroll to top
jQuery('#toTop').click(function () {
    jQuery('body,html').animate({
      scrollTop: 0
    }, 300);
  });