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Run results for:
for vs foreach vs some vs every vs for..of vs map
Compare loop performance
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=559501" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.0
Device Platform:
Mobile
Date tested:
one year ago
Benchmark engine:
Benchmark.js
foreach
572K/s
some
571K/s
every
555K/s
map
527K/s
for..of
179K/s
for
175K/s
View exact numbers
Test name
Executions per second
✓
foreach
571,979 Ops/sec
some
571,226 Ops/sec
every
554,846 Ops/sec
map
527,380 Ops/sec
for..of
178,625 Ops/sec
for
174,779 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]; });
some
array.some(function(i) { array[i]; });
every
array.every(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }
map
array.map(a => a);