Run results for: Dom benchmark

Run details:

User agent: Mozilla/5.0 (Windows NT 5.1; rv:50.0) Gecko/20100101 Firefox/50.0

Browser: Firefox 50

Operating system: Windows XP

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
one-liner found	603422.3 Ops/sec
if breakout found	575647.9 Ops/sec
one-liner not found	441844.6 Ops/sec
if breakout not found	455532.3 Ops/sec
single found	156356.2 Ops/sec

HTML Preparation code:

<div id="i1">
  <div id="i2">
    <div id="i4" class="c1">
      <div class="c5">
        <div class="c4">

        </div>
        <div class="c5">

        </div>
      </div>
    </div>
    <div class="c7">
      <div class="c6">

      </div>
    </div>
    <div id="i3" class="c2">
      <div class="c3">
        <div class="c4">
          <div class="c8">
            <span>
				Find me
            </span>
          </div>
        </div>
        <div class="c5">

        </div>
      </div>
    </div>
  </div>
</div>

Tests:

one-liner found
var r = function () { return document.getElementById('i3').querySelector('span'); }()
if breakout found
var r = function () { var e = document.getElementById('i3'); return e ? e.querySelector('span') : null; }()
one-liner not found
var r = function () { return document.getElementById('i4').querySelector('span'); }()
if breakout not found
var r = function () { var e = document.getElementById('i4'); return e ? e.querySelector('span') : null; }()
single found
var r = function () { return document.querySelector('span'); }()

Run results for: Dom benchmark

one-liner found

if breakout found

one-liner not found

if breakout not found

single found