<!doctype html>
<html class="a,b">
 <head>
  <title>element.getElementsByClassName(array): "a", "b"</title>
  <script src="../resources/common.js"></script>
 </head>
 <body class="a,b x">
  <p id="r" class="a,bx">FAIL (script did not run)</p>
  <script class="xa,b"> t(document.documentElement.getElementsByClassName(["\fa","b\n"]), [document.body]) </script>
 </body>
</html>