# Group state and logic in a jComponent plugin > Declare a plugin with PLUGIN() and attach it to a part of the page with ui-plugin, using ? as its own path. Framework: jcomponent20 Product: jComponent 20 (jcomponent@20) Language: en Content-SHA256: 918277cc4bfc0f66aebf54064e58421a46ea131fb2fb2ec1acefc647442b9b4b Snapshot: c0700e321579725c5cf4f5ace1ad7d2866d1b4f93c24a63c0b41b6b7998e976c Sources: jcomponent20@3fedd009a277f50fddc608b97afbec553b67c51b Review: not-recorded A plugin is the controller of a section of the page. `PLUGIN(name, declaration)` registers it and `` attaches it to an element. Inside the section, `?` in a path means "the path of the plugin", so the markup does not depend on where the plugin lives in the state. The declaration receives `self` (the plugin instance) and `config`. `self.get()` and `self.set()` work relative to the plugin path, and `self.element` is the jQuery element of the ``. Implement `self.make` to run code once the plugin is ready. Use `self.element` for DOM events: `self.on()` is for jComponent events, not for clicks. ```html public/index.html jComponent

Items:

```