Is there a way to set up a listener function to listen to events?

You can easily listen to Journeys lifecycle events by registering listener functions like so:

javascript var listener = function(event, data) { console.log(event, data); } // Specify an event to listen for branch.addListener('willShowJourney', listener); // Listen for all events branch.addListener(listener);

Listener Name	Description
willShowJourney	Journey is about to be shown
didShowJourney	Journey's entrance animation has completed and it is being shown to the user
willNotShowJourney	Journey will not be shown and no other events will be emitted
didClickJourneyCTA	User clicked on Journey's CTA button
didClickJourneyClose	User clicked on Journey's close button
willCloseJourney	Journey close animation has started
didCloseJourney	Journey's close animation has completed and it is no longer visible to the user