<!doctype html>
<html>
 <head>
  <title>document.getElementsByClassName(): multiple classes</title>
  <script src="resources/common.js"></script>
 </head>
 <body class="a b">
  <p id="r">FAIL (script did not run)</p>
  <script> t(document.getElementsByClassName("b\t\f\n\na\rb"), [document.body]) </script>
 </body>
</html>