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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=627787" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Windows 7
Device Platform:
Desktop
Date tested:
3 months ago
forEach
20.5M/s
for ... of
8.2M/s
View exact numbers
Test name
Executions per second
✓
forEach
20,481,828 Ops/sec
for ... of
8,197,880 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) }