examples/basic.html

<!DOCTYPE html>
<html>
  <head>
    <link href="../css/perfect-scrollbar.css" rel="stylesheet">
    <script src="../dist/perfect-scrollbar.js"></script>
    <style>
    #container {
      position: relative;
      margin: 0px auto;
      padding: 0px;
      width: 600px;
      height: 400px;
      overflow: auto;
    }
    #container .content {
      background-image: url('./assets/azusa.jpg');
      width: 1280px;
      height: 720px;
    }
    </style>
  </head>
  <body>
    <div id="container">
      <div class="content">
      </div>
    </div>

    <p style='text-align: center'>
      Width <input type='text' id='width' value='600'>
      Height <input type='text' id='height' value='400'>
      <button onclick='updateSize()'>Change!</button>
    </p>

    <script>
    var $ = document.querySelector.bind(document);

    var ps = new PerfectScrollbar('#container');

    function updateSize() {
      var width = parseInt($('#width').value, 10);
      var height = parseInt($('#height').value, 10);

      $('#container').style.width = width + 'px';
      $('#container').style.height = height + 'px';

      ps.update();
    }
    </script>
  </body>
</html>