<!doctype html>
<html>
 <head>
  <title>document.getElementsByClassName(): multiple classes</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
 </head>
 <body class="a">
  <div id="log"></div>
  <script> test(function() {
                  document.getElementsByClassName("a\fa"), [document.body]
                })
  </script>
 </body>
</html>