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Run results for:
CSS selector best performance
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<iframe src="https://measurethat.net/Embed?id=580509" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
case-1
1781986.5 Ops/sec
case-2
1770525.6 Ops/sec
case-3
1788657.2 Ops/sec
case-4
1778823.5 Ops/sec
case-5
1770193.4 Ops/sec
case-6
1767087.6 Ops/sec
case-7
1761292.9 Ops/sec
case-8
2288246.2 Ops/sec
HTML Preparation code:
<div id="my-id"> <div class="grand"> <div class="my-class"> <p> I like carrots! </p> </div> </div> </div> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
Tests:
case-1
$(' div#my-id div.grand div.my-class ').css("background-color", "#cccccc");
case-2
$(' #my-id .grand div.my-class ').css("background-color", "#cccccc");
case-3
$(' #my-id .grand .my-class ').css("background-color", "#cccccc");
case-4
$(' div#my-id div.my-class ').css("background-color", "#cccccc");
case-5
$(' #my-id div.my-class ').css("background-color", "#cccccc");
case-6
$(' #my-id .my-class ').css("background-color", "#cccccc");
case-7
$(' div.my-class ').css("background-color", "#cccccc");
case-8
$(' .my-class ').css("background-color", "#cccccc");