Run results for: Arffrom - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0

Browser: Firefox 76

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
liveArr	36692892.0 Ops/sec
liveArrFrom	41895828.0 Ops/sec
statArrFrom	43966976.0 Ops/sec

HTML Preparation code:

<div>
  <ul>
    <li><a href="#">item 1</a></li>
    <li><a href="#">item 2</a></li>
    <li><a href="#">item 3</a></li>
  </ul>
</div>
<script>
  function toArray(collection) {
   var result = [],
       i = -1;
   while (result[++i] = collection[i]) {};
   result.length--;
   return result;
  }
  
  const liveList = document.getElementsByTagName('a');
  const statList = document.querySelectorAll('a');
  const liveArr = toArray(liveList);
  const liveArrFrom = Array.from(liveList);
  const statArrFrom = Array.from(statList);
</script>

Tests:

liveArr
for (var i = 0, length = liveArr.length; i < length; i++) { liveArr[i].nodeName; }
liveArrFrom
for (var i = 0, length = liveArrFrom.length; i < length; i++) { liveArrFrom[i].nodeName; }
statArrFrom
for (var i = 0, length = statArrFrom.length; i < length; i++) { statArrFrom[i].nodeName; }