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Run results for:
concat vs spread three arrays
Compare the spread operator with the concat() method
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<iframe src="https://measurethat.net/Embed?id=519399" 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/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
concat
5467685.5 Ops/sec
spread
7476074.0 Ops/sec
Script Preparation code:
var a = [1, 2, 3, 4, 5]; var b = [6, 7, 8, 9, 10, 11]; var c= [12, 13, 14, 15, 16];
Tests:
concat
var res = [].concat(a, b, c);
spread
var res = [...a, ...b, ...c];