?^</code> - Attempt to locate the required controller by searching the element and its parents or pass
<code>null</code> to the <code>link</code> fn if not found.</li>
<li><code>?^^</code> - Attempt to locate the required controller by searching the element&#39;s parents, or pass
<code>null</code> to the <code>link</code> fn if not found.</li>
</ul>
<h4 id="-controlleras-"><code>controllerAs</code></h4>
<p>Controller alias at the directive scope. An alias for the controller so it
can be referenced at the di