jz5/index.html

## index.html
<!DOCTYPE html>
<html>
<body>
    <div>
        <script>
            (function () {
                var j = document.createElement("script");
                j.src = "http://localhost/dummy.js";
                document.body.appendChild(j);
            })();
        </script>
        <script src="foo.js"></script>
    </div>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<body>
	<div>
	<script>
	(function () {
	var j = document.createElement("script");
	j.src = "http://localhost/dummy.js";
	document.body.appendChild(j);
	})();
	</script>
	<script src="foo.js"></script>
	</div>
	</body>
	</html>