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Run results for:
for vs foreach vs for..in vs for..of zzz3
Compare loop performance
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=540156" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
for..of
13K/s
foreach
3K/s
for in
220/s
for
112/s
View exact numbers
Test name
Executions per second
✓
for..of
12,949 Ops/sec
foreach
2,602 Ops/sec
for in
220 Ops/sec
for
112 Ops/sec
Script Preparation code:
var array = new Array(100000); for (let i = 0; i < 100000; ++i) { array[i] = i; }
Tests:
for
let s = 0; for (var i = 0; i < array.length; i++) { s+=array[i]; }
foreach
let s = 0; array.forEach(function(n) { s+=n; });
for in
let s = 0; for (const n in array) { s+=n; }
for..of
let s = 0; for (const n of array) { s+=n; }