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Run results for:
for vs forEach vs for-of vs for-reverse vs reduce (calculate sum)
for vs forEach vs for-of vs for-reverse vs reduce (calculate sum)
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=491445" 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
reduce
6.6M/s
for-of
5.6M/s
forEach
4.0M/s
for-reverse
154K/s
for
79K/s
View exact numbers
Test name
Executions per second
✓
reduce
6,602,774 Ops/sec
for-of
5,644,932 Ops/sec
forEach
3,955,648 Ops/sec
for-reverse
154,496 Ops/sec
for
78,949 Ops/sec
Script Preparation code:
var array = Array.from({length: 100}, (_, index) => index);
Tests:
for
var sum = 0 for (var i = 0; i < array.length; i++) { sum += array[i]; }
forEach
var sum = 0 array.forEach(function(item) { sum += item; });
for-of
var sum = 0 for (var item of array) { sum += item; }
for-reverse
var sum = 0 for (var i = array.length; i--;) { sum += array[i]; }
reduce
var sum = array.reduce((sum, item) => sum + item, 0)