Callback function for activating a Page in Optimizely X when Demandbase object has loaded

DemandbaseFirstPageLoad.js

function callbackFn(activate, options) {
  // Interval in ms for polling Demandbase visitor data
  var POLL_INTERVAL = 50;

  // Max number of poll attempts
  var MAX_POLL_COUNT = 5;

  var pollCount = 0;
  function poll() {
    pollCount++;
    if (window.optimizely &&
        window.optimizely.get('visitor') &&
        optimizely.get('visitor')['vendor.demandbase'] &&
        !options.isActive) {
      activate();
    } else if (pollCount < MAX_POLL_COUNT) {
      setTimeout(poll, POLL_INTERVAL);
    }
  }
  poll();
}