servo_xhr_demo.html

<!DOCTYPE html>
<html>
<head>
  <title>Servo - XHR Race condition demo</title>
  <script>
    function handleEvent(e) {
      switch (e.type) {
        case "load": 
          for (var i = 0; i < 6000; i++) {
            document.getElementById("loaded-res").textContent = "Loaded - " + i;
          }
          break;
        case "timeout":
          document.getElementById("timeout-res").textContent = "Timed out";
          break;
      }
    }

    var req= new XMLHttpRequest();
    req.onload = handleEvent;
    req.ontimeout = handleEvent;
    req.timeout = 1000;
    req.open("GET", "index.html", true);
    req.send();

  </script>
</head>
<body>
  <h3 id="loaded-res">
  </h3>
  <h3 id="timeout-res">
  </h3>
</body>
</html>