https://jejuallpass.com/www/js/renew/all.js

1$(document).ready(function(){
2
3  var $topBtn = $('.top');
4
5  $(window).on('scroll',function(){
6    // alert('s')
7    var $scrollTop = $(window).scrollTop();
8    if ($scrollTop > 0) {
9      $topBtn.fadeIn();
10      // alert($scrollTop)
11    } else {
12      $topBtn.fadeOut();
13      // alert('f')
14    }
15  });
16  $('.top').find('>a').on('click',function(){
17    // alert('a')
18    $('body,html').stop().animate({
19      'scrollTop':'0'
20    },300,'linear');
21  });
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69    });