demo.php

<?php


add_action('media_buttons', 'my_super_function');


function my_super_function(){
	?>
	<a href="#" id="aid-nf-insert-submission" class="button"><span class="nf-insert-form dashicons dashicons-feedback"></span> Shortcode einfügen</a>

	<script>
		jQuery(function($) {
		    $(document).ready(function(){
		        $("#aid-nf-insert-submission").click(function(){
                // my code
            });
				$(document).on('click', '#aid-nf-insert-form', function(){
					// my code
					wp.media.editor.insert('my text');
				});
		    });
		});
	</script>
}