Your own $dotapp library
DotApp is PHP on the server and dotapp.js in the browser. This page registers exNotify, exCopy, and exStepper with $dotapp().fn(), then talks to PHP through this.load.
1. Toast factory
Call $dotapp().exNotify({ title, text }) from any page script. No jQuery. No alert().
2. Copy widget
Bind the same plugin to many buttons. The snippet below is a real installer command.
php dotapper.php --install
3. Stepper widget
One DOM node, one instance. Plus and minus stay on the element API.
4. Library → PHP
The widget uses this.load + parseReply, not fetch. CRC travels with the POST.