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Run results for:
Underscore.js _forEach() vs Native for loop for large arrays
This will compare the native for loop speed vs the underscore _forEach() on a relatively large array.
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=611370" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
10 months ago
Test name
Executions per second
Underscore.js _forEach()
63327216.0 Ops/sec
native for loop
132282104.0 Ops/sec
HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/underscore@1.13.6/underscore-umd-min.js"></script>
Script Preparation code:
var values = [{a: 30310}, {b: 100303}, {c: 3040494}]
Tests:
Underscore.js _forEach()
var count = 0; _.forEach(values, function(v,i) { if (v.a != null) { count++; } })
native for loop
var count = 0; for (var i = 0; i < values.length; i++) { if (values[i].a != null) { count++; } }