third_party/WebKit/PerformanceTests/DOM/textarea-edit.html

   1 <!DOCTYPE html>
   2 <body>
   3 <style>
   4 textarea:valid {
   5     background-color: lime;
   6 }
   7 textarea:invalid {
   8     background-color: red;
   9 }
  10 </style>
  11 <script src="../resources/runner.js"></script>
  12 <textarea maxlength=2147483647 id="container"></textarea>
  13 <script>
  14 var container = document.getElementById('container');
  15 container.focus();
  16 PerfTestRunner.measureRunsPerSecond({
  17     description: "Measures performance of adding text to a textarea using document.execCommand, then clearing it.",
  18     run: function() {
  19         for (var i = 0; i < 500; ++i)
  20             document.execCommand('insertText', false, 'A quick brown fox jumps over the lazy dog.\n');
  21         container.value = '';
  22     }
  23 });
  24 </script>
  25 </body>