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Run results for:
className.includes vs. classList.contains vs matches
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Run details:
User agent:
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Windows 8.1
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
className
17007.6 Ops/sec
classList
1091318.4 Ops/sec
matches
10880.8 Ops/sec
HTML Preparation code:
<div id="foo" class="test"></div>
Tests:
className
var element = document.getElementById("foo"); var i = 1000; while (i--) { if (element.className.includes("test")) {} }
classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList.contains("test"); }
matches
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.matches(".test"); }