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Run results for:
for vs foreach vs some vs every vs for..of vs map
Compare loop performance
Go to the benchmark
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=606611" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0
Browser:
Firefox 138
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
for
15.2M/s
every
9.0M/s
some
8.8M/s
foreach
7.7M/s
map
6.5M/s
for..of
1.2M/s
View exact numbers
Test name
Executions per second
✓
for
15,236,318 Ops/sec
every
8,998,968 Ops/sec
some
8,813,359 Ops/sec
foreach
7,684,023 Ops/sec
map
6,458,220 Ops/sec
for..of
1,203,932 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);