2 The children changed / reorder event is fired an unpredictable number of times.
3 @WIN-DENY:EVENT_OBJECT_REORDER*
9 <h2 id=
"h">Heading
</h2>
12 document
.querySelector('#p').textContent
= 'Modified Para';
13 document
.querySelector('#h').firstChild
.data
= 'Modified Heading';