Submit form from Rooster

Script in overlay

      window.jQuery(function() {

        var $ = window.jQuery;
        var submittable = $('[data-submittable="true"]');

        submittable.find('[data-submit-state]:not([data-submit-state="unsubmitted"])').hide();
        submittable.find('[data-submit-state="unsubmitted"]').show();

        function watchForSubscriptionSuccess(submittable) {
          _GT.active_context.on('change', function(changes) {
            if(changes.success) {
              submittable.find('[data-submit-state]:not([data-submit-state="submitted"])').hide();
              submittable.find('[data-submit-state="submitted"]').show();
            } else if (changes.hasOwnProperty('success')) {
              submittable.find('[data-submit-state]:not([data-submit-state="error"])').hide();
              submittable.find('[data-submit-state="error"]').show();
            }
          });
        }

        function submitEngagement(email) {
          _GT.active_context.add({'email': email});
          var host_url = new _GT.QueryString(window.location.search).get_value('url') || '*';
          _GT.host_origin = _GT.getOrigin(host_url);
          var host_wirepoint = new _GT.WirePoint(window.parent || window, {origin: _GT.host_origin});
          host_wirepoint.post_message('gt_engagement_popup', host_wirepoint.origin());
          watchForSubscriptionSuccess(submittable);
        }

        submittable.find('button').bind('click', function (e) {
          var email = submittable.find('[data-submit-state]:visible input[type="email"]').val();
          submitEngagement(email);
          submittable.find('[data-submit-state]:not([data-submit-state="submitting"])').hide();
          submittable.find('[data-submit-state="submitting"]').show();
        });
      });

Script on site

window.jQuery && window.jQuery(function() {
  var $ = window.jQuery;
  _GT.on('engagement', function(popup) {
    var email = _GT.active_context.properties.email;
    jQuery.post('/subscribe',
      {email: email},
      function(data) {
        if('ok' == data) {
          _GT.active_context.add({'success':'true'});
        }
      }
    );
  });
});