third_party/WebKit/PerformanceTests/Bindings/event-target-wrapper.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../resources/runner.js"></script>
   4 <p><a href="#">Click here to start</a></p>
   5 <script>
   6 var link = document.getElementsByTagName('a')[0];
   7 var evt = null;
   8 var kIteratonsPerTest = 100000;
   9
  10 link.addEventListener('click', function(event) {
  11     link.textContent = '';
  12     window.evt = event;
  13     event.preventDefault();
  14
  15     PerfTestRunner.measureRunsPerSecond({
  16         description: "Measures performance of repeatedly accessing the event object within an event handler.",
  17         run: function () {
  18         var e = window.evt;
  19         for (var x = 0; x < kIteratonsPerTest; x++)
  20             e.target;
  21     }});
  22
  23     return false;
  24 }, false);
  25
  26 if (window.eventSender) {
  27     eventSender.mouseMoveTo(link.offsetLeft + 5, link.offsetTop + 5);
  28     eventSender.mouseDown();
  29     eventSender.mouseUp();
  30 }
  31 </script>
  32 </body>