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Run results for:
for of vs forEach vs for
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=628133" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Brave/1 Version/26.4 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
3 months ago
for of
5K/s
for
4K/s
forEach
3K/s
View exact numbers
Test name
Executions per second
✓
for of
4,659 Ops/sec
for
3,583 Ops/sec
forEach
2,931 Ops/sec
Script Preparation code:
var arr = []; for (var i = 0; i < 10000; i++) { arr[i] = {x: 4 + i, y: 'test string' + i, q: {z: '' + i}}; }
Tests:
for
let x = 1; for (let i = 0; i < arr.length; ++i) { x = arr[i]; }
forEach
let x = 1; arr.forEach(el => x = el);
for of
let x = 1; for(el of arr) { x = el; }