JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://code.jquery.com/qunit/git/qunit.css">
<script src="http://code.jquery.com/qunit/git/qunit.js"></script>
<html>
    <head>
        <link rel="stylesheet" type="text/css" href="qunit.css" />
        <title>cookbook QUnit Test</title>
        <script type='text/javascript' src='qunit.js'></script>
        <script type='text/javascript' src='jquery.js'></script>
        <script type='text/javascript' src='test.js'></script>
    </head>
    <body>

        <h1 id="qunit-header">Test Suite</h1>
        <h2 id="qunit-banner"></h2>
        <div id="qunit-testrunner-toolbar"></div>
        <h2 id="qunit-userAgent"></h2>
        <div id="test-content"></div>
        <ol id="qunit-tests"></ol>
        <div id="qunit-test-area"></div>
    </body>
</html>

JavaScript

test("unload with other window", function(){
    stop()
    $('<iframe id="myframe" src="http://fiddle.jshell.net/UKEK7/show/"></iframe>').appendTo('#qunit-test-area').load(function(){
        $($("#myframe")[0].contentWindow).bind("unload", function(){
            ok(true, "called unload")
            start();
        })
        $("#myframe").remove()
    })
})