https://soporte.decorabano.com/hc/theming_assets/01HZPJTVF4CADKBH43QP8F2EY7

1(function ($, window, document) {
2  const BUTTON_ELEMENT = '[data-scroll-to-top]';
3
4  const ScrollToTop = {
5    init() {
6      this.cacheElements();
7      this.topbarHeight = parseInt(this.$topbar.height(), 10);
8
9      if (this.$button.length) {
10        this.bindEvents();
11      }
12    },
13    cacheElements() {
14      this.$window = $(window);
15      this.$topbar = $('[data-topbar]');
16      this.$button = $(BUTTON_ELEMENT);
17    },
18    bindEvents() {
19      this.$window.on('scroll', this.handleScroll.bind(this));
20      $(document).on('click', BUTTON_ELEMENT, this.handleClick);
21    },
22    handleClick() {
23      $('html, body').animate({ scrollTop: 0 }, 1000);
24      return false;
25    },
26    handleScroll() {
27      const scrolled = this.$window.scrollTop();
28
29      if (scrolled > this.topbarHeight) {
30        this.$button.addClass(LotusConfig.css.activeClass);
31      } else {
32        this.$button.removeClass(LotusConfig.css.activeClass);
33      }
34    },
35  };
36
37  $(() => {
38    ScrollToTop.init();
39  });
40}(jQuery, window, document));