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Run results for:
Object arrays: findIndex vs for loop
Testing finding an object array via findIndex or by using a for loop
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<iframe src="https://measurethat.net/Embed?id=497673" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
2 years ago
for loop
28K/s
findIndex
7K/s
View exact numbers
Test name
Executions per second
✓
for loop
28,122 Ops/sec
findIndex
6,826 Ops/sec
Script Preparation code:
var arr = new Array(15000); arr.fill({ id: 0 }); arr = arr.map((el, idx) => el.id = idx); var foo = Math.floor(Math.random() * 15000);
Tests:
findIndex
arr.findIndex((itm) => itm.id === foo);
for loop
for (let i = 0; i < arr.length; i++) { if (arr[i].id === foo) break; }