AOS CSS Scroll Animations with jQuery

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Animation</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

  <!--<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css">-->
  <link href="//cdn.rawgit.com/michalsnik/aos/2.1.1/dist/aos.css" rel="stylesheet">
  <script src="//cdn.rawgit.com/michalsnik/aos/2.1.1/dist/aos.js"></script>

  <script>
    $(document).ready(function(){
      for(var i=0;i<50;i++){
        addItem();
      };

      $(".list-group-item:odd").attr("data-aos","fade-right");
      AOS.init();
    });

    function addItem(){
      var act = "fade-left";
      var anchor = "bottom-bottom";

      $("#list").append('<a class="list-group-item" data-aos="'+act+'" data-aos-anchor-placement="'+anchor+'">Item in List</a>');
    }

  </script>
</head>
<body>

<div class="container">
  <h2 data-aos="flip-down" data-aos-duration="1000">Basic List Group</h2>
  <div id="list" class="list-group">
  </div>
</div>

</body>
</html>