text: var Greeter = (function () {
      function Greeter(element) {
          this.element = element;
          this.element.innerHTML += "The time is: ";
          this.span = document.createElement('span');
          this.element.appendChild(this.span);
          this.span.innerText = new Date().toUTCString();
      }
      Greeter.prototype.start = function () {
          var _this = this;
          this.timerToken = setInterval(function () { return _this.span.innerHTML = new Date().toUTCString(); }, 500);
      };
      Greeter.prototype.stop = function () {
          clearTimeout(this.timerToken);
      };
      return Greeter;
  })();
  window.onload = function () {
      var el = document.getElementById('content');
      var greeter = new Greeter(el);
      greeter.start();
  };
  //# sourceMappingURL=app.js.map