Golang React JS Technology Blog

jQuery example of scroll to top

<!DOCTYPE html>
<html>
<head>
<style>
.scrollToTop {
  margin: 0 30px 20px 0;
  text-align: center;
  text-decoration: none;
  position: fixed;
  bottom: 0;
  right: 0;
  display: none;
}

.scrollToTop:hover {
  text-decoration: none;
}

body {
  height: 5000px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
jQuery(document).ready(function($) {

  var visible = false;
  //Check to see if the window is top if not then display button
  $(window).scroll(function() {
    var scrollTop = $(this).scrollTop();
    if (!visible && scrollTop > 100) {
      $(".scrollToTop").fadeIn();
      visible = true;
    } else if (visible && scrollTop <= 100) {
      $(".scrollToTop").fadeOut();
      visible = false;
    }
  });

  //Click event to scroll to top
  $(".scrollToTop").click(function() {
    $("html, body").animate({
      scrollTop: 0
    }, 800);
    return false;
  });

});
</script>
</head>
<body>
<a href="#" class="scrollToTop" style="display: none;">Top</a>
</body>
</html>
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