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Run results for:
Array loop vs foreach vs map vs while
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<iframe src="https://measurethat.net/Embed?id=495470" 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/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
foreach
27/s
map
26/s
for
15/s
while
15/s
View exact numbers
Test name
Executions per second
✓
foreach
27 Ops/sec
map
26 Ops/sec
for
15 Ops/sec
while
15 Ops/sec
Script Preparation code:
var arr = []; for (var i = 0; i < 1000000; i++) { arr[i] = i; } function someFn(i) { return i * 3 * 8; }
Tests:
foreach
arr.forEach(function (item){ someFn(item); })
for
for (var i = 0, len = arr.length; i < len; i++) { someFn(arr[i]); }
map
arr.map(item => someFn(item))
while
let i = 0, len = arr.length; while (i<len) { someFn(arr[i]); i++; }