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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=615813" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0
Browser:
Firefox 128
Operating system:
Linux
Device Platform:
Desktop
Date tested:
11 months ago
for in
4.8M/s
foreach
1.7M/s
for
1.6M/s
for..of
250K/s
View exact numbers
Test name
Executions per second
✓
for in
4,800,459 Ops/sec
foreach
1,698,328 Ops/sec
for
1,554,501 Ops/sec
for..of
250,050 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; }