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Run results for:
for vs foreach vs for..of vs for..of over entries (const)
Compare loop performance
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<iframe src="https://measurethat.net/Embed?id=498909" 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/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
for..of
172K/s
foreach
171K/s
for..of over entries
159K/s
for
72K/s
View exact numbers
Test name
Executions per second
✓
for..of
171,912 Ops/sec
foreach
171,216 Ops/sec
for..of over entries
159,427 Ops/sec
for
72,006 Ops/sec
Script Preparation code:
var array = Array.from({length: 100}); var t;
Tests:
for
for (let i = 0; i < array.length; i++) { t = array[i]; }
foreach
array.forEach(function(v, i) { t = v; });
for..of
for (const v of array) { t = v; }
for..of over entries
for (const [i, v] of array.entries()) { t = v; }