Trigger a Custom Event when a Page is Unloading

[edipguney]

Actually, I have noticed that file uploader leaves orphaned files if thing has not been created, so I decided to delete after user leave the page. I have tried the plugin, it does not work properly. I found this solution.

[SOLVED] Preventing "orphaned" files - How would you handle it?

Consider a user profile page that allows the user to update their picture. As a UI requirement, the updated profile picture gets saved only when the user explicitly hits the Save button. Now, if the user changes their mind and hits Cancel instead of Save, the uploaded image is already in Bubble’s storage. To practice good housekeeping, the uploaded image should be deleted, and the previous profile image should be restored. That should be possible with a workflow on the Cancel button. However, …