Figured I'd ask this here instead of on Stack Overflow, since most of those folks might not have the experience with a flat-file CMS.

Suppose I'm submitting a form to create a new entry and want to simultaneously update my user file (perhaps with that entry's ID). Does anyone have a suggestion for accomplishing that? I'm not super savvy with Ajax and how it works with vanilla JS.

Answered by Jason Varga! Go to answer.