Open the web console to use campaignion_tracking
...
Try yourself and type this into the webconsole:
window.campaignion_tracking.tracker.publish('hello', {message: "this is an arbitrary message object"})
You should see your msg
object feed back to you via the tracker PubSub mechanism.
(This test page works best in browsers with support for <script type="module"></script>
,
ie. modern browsers ie. not IE 11.)