How to include JS into custom Elementor Widget

gistfile1.txt

Include your JS into a normal file, just how you are used to and enqueue it with wp_enqueue_script. This will not work in the editor, because you want the functions to fire when you add them.
At the beginning of your widget file, add ‘use Elementor\Plugin;’.
Then at the end of the render() function in your PHP, add this:

<?php if ( Plugin::$instance->editor->is_edit_mode() ) : ?>

  <script>Your code here</script

<?php

This will only load this section if you are in the editor. The sad thing is that you will have some duplicate code, but so far I've not found a better way. Include only what you need for that particular widget.
Hope this helps!
Have a great day.

Excuse me. What does the "Plugin" stand for ?