SO - 29933721

by Arun P Johny

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/js/select2.min.js"></script>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/css/select2.min.css">
<select id="my-select">
    <option>1</option>
    <option>2</option>
</select>

JavaScript

$('#my-select').select2().off('change.mychange').on('change.mychange', function () {
    //your code
});