o display its current value as
text.</p>
</li>
<li><p>Reverse the sort order by adding a <code>-</code> symbol before the sorting value: <code>&lt;option value=&quot;-age&quot;&gt;Oldest&lt;/option&gt;</code></p>
</li>
</ul>
<h1 id="summary">Summary</h1>
<p>Now that you have added list sorting and tested the app, go to <a href="tutorial/step_05">step 5</a> to learn
about Angular services and how Angular uses dependency injection.</p>
<ul doc-tutorial-nav="4"></ul>


