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Run results for:
findIndex vs for loop with plain number array
Testing finding an object array via findIndex or by using a for loop
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<iframe src="https://measurethat.net/Embed?id=534083" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15
Browser:
Safari 17
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
findIndex
134.5 Ops/sec
for loop
55.0 Ops/sec
Script Preparation code:
var arr = new Array(15000); arr.fill([ 500 ]); 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; }