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Run results for:
for vs foreach vs some vs for..of (short array)
Compare loop performance
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<iframe src="https://measurethat.net/Embed?id=487569" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:122.0) Gecko/20100101 Firefox/122.0
Browser:
Firefox 122
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
2 years ago
for
299.4M/s
some
201.1M/s
foreach
200.2M/s
for..of
29.4M/s
View exact numbers
Test name
Executions per second
✓
for
299,391,616 Ops/sec
some
201,118,112 Ops/sec
foreach
200,226,144 Ops/sec
for..of
29,411,618 Ops/sec
Script Preparation code:
var array = new Array(5);
Tests:
for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
some
array.some(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }