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Run results for:
for vs foreach vs for..in vs for..of (Fixed)
Compare loop performance
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=621795" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:145.0) Gecko/20100101 Firefox/145.0
Browser:
Firefox 145
Operating system:
Windows
Device Platform:
Desktop
Date tested:
8 months ago
for in
44.3M/s
for
15.8M/s
foreach
6.8M/s
for..of
2.0M/s
View exact numbers
Test name
Executions per second
✓
for in
44,289,752 Ops/sec
for
15,816,383 Ops/sec
foreach
6,757,200 Ops/sec
for..of
2,011,518 Ops/sec
Script Preparation code:
var array = new Array(100);
Tests:
for
for (let i = 0, len = array.length; i < len; i++) { array[i]; }
foreach
array.forEach(function(i) { i; });
for in
for (let i in array) { array[i]; }
for..of
for (let i of array) { i; }