The problem seems to be that the click event is being bound to each item in the a.$results. 
I want the click to be only on the button.   I have a jsFiddle set up with the problem  https://jsfiddle.net/sm1fo5d0/10/

Thanks in advance.

1. let a = $(this).data('select2');
2. if (!$('.select2-link').length) {
3. a.$results.parents('.select2-results')
5.                 .append('<div class="select2-link select2-close"><a>Close</a></div>')
6.                 .on('click', function (b) {
7. 
   
8.                     alert('I\'ve been clicked');
9.                     //a.trigger('close');
10.                 });
11.         }