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Run results for:
getElementById vs querySelector
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Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 26_2_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/144.0.7559.95 Mobile/15E148 Safari/604.1
Browser:
Chrome Mobile iOS 144
Operating system:
iOS 26.2.0
Device Platform:
Mobile
Date tested:
3 months ago
Test name
Executions per second
getElementById
70710368.0 Ops/sec
querySelector
13678634.0 Ops/sec
HTML Preparation code:
<div id="testElement"></div>
Tests:
getElementById
var el = document.getElementById('testElement'); var className = el.className;
querySelector
var el = document.querySelector('#testElement'); var className = el.className;