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Run results for:
for vs foreach vs for..in vs for..of
Compare loop performance
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=540396" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 17
Operating system:
iOS 17.5.1
Device Platform:
Mobile
Date tested:
one year ago
for in
9.1M/s
foreach
725K/s
for
238K/s
for..of
232K/s
View exact numbers
Test name
Executions per second
✓
for in
9,058,445 Ops/sec
foreach
725,418 Ops/sec
for
237,862 Ops/sec
for..of
231,821 Ops/sec
Script Preparation code:
var array = new Array(100);
Tests:
for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
for in
for (var i in array) { array[i]; }
for..of
for (var i of array) { array[i]; }