Working and non-working JS examples tested in both Chrome and Firefox on Mac OSX

main.html.erb

  <script>
    // This works in 4.2.7
    $(document).ready(function() {
      setTimeout(  function() {
        $('#browse-btn').browseEverything()
          .done(function(data) { $('#status').html(data.length.toString() + " items selected") })
          .cancel(function()   { window.alert('Canceled!') });
      })},10);

    // This does not work in 4.2.7
    $(document).ready(function() {
      $('#browse-btn').browseEverything()
        .done(function(data) { $('#status').html(data.length.toString() + " items selected") })
        .cancel(function()   { window.alert('Canceled!') });
      });
  </script>