4 border: 1px solid black;
11 <script src="../resources/runner.js"></script>
14 window.onload = function() {
15 var root = document.querySelector('#list').createShadowRoot();
16 root.appendChild(document.createElement('content'));
18 PerfTestRunner.measureTime({
22 var frag = document.createDocumentFragment();
23 var tmpl = document.querySelector('#tmpl');
24 var start = PerfTestRunner.now();
27 frag.appendChild(tmpl.content.cloneNode(true));;
28 } while (++i < listSize);
29 document.querySelector('#list').appendChild(frag);
31 document.body.offsetHeight;
32 return PerfTestRunner.now() - start;
35 document.querySelector('#list').innerHTML = '';
42 <div class="bar baz">item</div>
45 <section id="list"></section>