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Run results for:
Array.prototype.concat vs spread operator vs lodash concat
Compare the new ES6 spread operator vs Array.prototype.concat vs _.concat
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=633224" 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/26.5.2 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
20 days ago
spread operator
53.9M/s
Array.prototype.concat
52.2M/s
lodash concat
11.9M/s
View exact numbers
Test name
Executions per second
✓
spread operator
53,863,464 Ops/sec
Array.prototype.concat
52,205,736 Ops/sec
lodash concat
11,899,352 Ops/sec
HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>
Script Preparation code:
var a = [1, 2, 3] var b = [4, 5, 6]
Tests:
Array.prototype.concat
var c = a.concat(b);
spread operator
var c = [...a, ...b]
lodash concat
var c = _.concat(a, b);