iff for the element and all of its children</td>
</tr>
</tbody>
</table>
<p>To learn more about lifecycle methods, <a href="lifecycle-methods.html">see the lifecycle methods page</a>.</p>
<hr>
<h3 id="keys"><a href="#keys">Keys</a></h3>
<p>Vnodes in a list can have a special attribute called <code>key</code>, which can be used to manage the identity of the DOM element as the model data that generates the vnode list changes.</p>
<p>Typically, <code>key</code> should be the unique identifier field of the obje