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Run results for:
findIndex vs indexOf - JavaScript performance (fixed 2)
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=513172" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser:
Chrome 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
findIndex
1616.5 Ops/sec
indexOf
677903.3 Ops/sec
findIndex (again)
1555.7 Ops/sec
indexOf (again)
676900.3 Ops/sec
Script Preparation code:
var arr = new Array(15000); arr.fill(null); arr = arr.map((el, idx) => ({ id: idx })); var randomEl = arr[Math.floor(Math.random() * 15000)]; var randomId = randomEl.id;
Tests:
findIndex
var index = arr.findIndex((el) => el.id === randomId);
indexOf
var index = arr.indexOf(randomEl);
findIndex (again)
var index = arr.findIndex((el) => el.id === randomId);
indexOf (again)
var index = arr.indexOf(randomEl);