DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
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<!DOCTYPE html>
<html class="reftest-wait">
  <head>
    <script>
      function doTest() {
        var n = document.getElementById("n");
        for (var i = 0; i < 5; ++i) {
          n.style.cssFloat = "left";
          document.body.offsetWidth;
          n.style.cssFloat = "";
          document.body.offsetWidth;
        }
        document.documentElement.className = "";
      }
    </script>
  </head>

  <body onload="doTest()">
    <table border="5">
      <tr>
        <td id="n">TD</td>
      </tr>
    </table>
  </body>
</html>