There is an event handler which can be placed in the Wix backend code called
wixMedia.onFileUploaded(event) which gets triggered whenever a file upload has been completed. How do I notify the front end (the page on my website) that the upload has completed? Don't get me wrong, its nice to know that the upload has completed but it is really the front-end code that needs this notification. Since the back-end and the front end don't communicate, how do I get this to happen?