layouts/partials/backtotop.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

<script>

  var backtotopButton = document.getElementById('backtotopButton');

  document.addEventListener('scroll', function () {
    if (
      document.body.scrollTop > 50 ||
      document.documentElement.scrollTop > 50
    ) {
      backtotopButton.style.opacity = '1'
    } else {
      backtotopButton.style.opacity = '0'
    }
  })

  function topFunction() {
    document.body.scrollTop = 0 // For Safari
    document.documentElement.scrollTop = 0 // For Chrome, Firefox, IE and Opera
  }

  // Trigger scroll event on load
  document.dispatchEvent(new CustomEvent('scroll'))
  backtotopButton.style.display = 'block'
</script>