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Run results for:
JS forEach vs for ... of
compare between forEach and for ... of
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<iframe src="https://measurethat.net/Embed?id=627461" 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) Version/26.2 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
4 months ago
forEach
64.5M/s
for ... of
28.8M/s
View exact numbers
Test name
Executions per second
✓
forEach
64,528,736 Ops/sec
for ... of
28,807,244 Ops/sec
Script Preparation code:
x = [1,2,3,4,5]
Tests:
forEach
y = [] x.forEach(i => y.push(i))
for ... of
y = [] for (const i of x) { y.push(i) }