How to call ajax links out of ajax content

How to call ajax links out of ajax content

The following scripts are encapsulate within "$(document).ready(function()"

Script No. 1:

$("#incoming_entry").on("click", function(){
                $(this).incoming_entry();
            });
           
            $.fn.incoming_entry = function() {
                $.ajax({url: "./query/incoming_incoming.php", success: function(result){
                        $("#incoming_content").html(result);
                    }});
            };

Via click on an a-element with the ID incoming_entry this script No.1 generates
via PHP, MYSQL the script No. 2 into a DIV with the ID incoming_content .
This a-element is not in this DIV.
Great.


Script No. 2:

$("#incoming_expel").on("click", function(){
                $(this).incoming_expel();
            });
           
            $.fn.incoming_expel = function() {
                alert("AJAX request successfully completed");
            };

I expect when I click on an a-element with the ID incoming_expel an alert.
But nothing happens.

Maybe you you know what to do.
Kai