pushState

// in a script file - we can attach a listener to a form ... this code handles the case that the form is for creating and editing a record.   the code below detects whether the UA supports pushState and rather than redirecting to get the new window state, it can do this client side and use pushState to set the URL correctly..

  if (updateOnNew && typeof(window.history.pushState) == 'function') {
    window.history.pushState("", "Edit Schedule", schedule.update_url + "/edit");
    // update any local page state...
  } else if (updateOnNew) {
    window.location = schedule.update_url + "/edit"; // older browser must redirect on new update
  }