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Run results for:
for vs foreach vs for..of vs for..of over entries (const) etc
Compare loop performance
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<iframe src="https://measurethat.net/Embed?id=567495" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser:
Chrome 130
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
foreach
158K/s
for..of
158K/s
for..of over entries
151K/s
for
53K/s
View exact numbers
Test name
Executions per second
✓
foreach
157,962 Ops/sec
for..of
157,725 Ops/sec
for..of over entries
151,157 Ops/sec
for
53,283 Ops/sec
Script Preparation code:
var array = Array.from({length: 100}); var t; var s = new Set()
Tests:
for
for (let i = 0; i < array.length; i++) { s.add(array[i]) }
foreach
array.forEach(function(v, i) { s.add(v) });
for..of
for (const v of array) { s.add(v) }
for..of over entries
for (const [i, v] of array.entries()) { s.add(v) }