third_party/WebKit/LayoutTests/fast/inspector-support/matchedrules.html

   1 <html>
   2 <style>
   3 div {
   4   color: red;
   5 }
   6
   7 div::selection {
   8   background-color: lime;
   9 }
  10 </style>
  11
  12 <div id="foo">Hello world</div>
  13
  14 <script>
  15 document.write('<p>The number of matched rules is: ' +
  16 document.defaultView.getMatchedCSSRules(document.getElementById('foo'), '').length);
  17 </script>