JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/jquery-ui.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/themes/ui-lightness/jquery-ui.css">
<div>dialog</div>

JavaScript

for(var i=0; i < 100; i++) {
    $('div').dialog({
        modal : true
    });
    $('div').dialog('destroy');
}
alert(jQuery.ui.dialog.overlay.oldInstances[0].selector);