block-invalidate.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html class='reftest-wait'>

  <link rel='stylesheet' type='text/css' href='style.css'>

  <style>

    meter { display: block; }

  </style>

  <script>

    function loadHandler() {

      setTimeout(function() {

        var p = document.getElementsByTagName('meter')[0];

        p.value = '0.5';

        document.documentElement.className = '';

      }, 0);

  </script>

  <body onload="loadHandler();">

    <meter value='0'></meter>

  </body>

</html>