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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=623978" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
Browser:
Chrome 144
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
6 months ago
forEach
95K/s
for
95K/s
for of
2K/s
View exact numbers
Test name
Executions per second
✓
forEach
95,085 Ops/sec
for
95,057 Ops/sec
for of
1,815 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; }