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Run results for:
Array.prototype.concat vs spread operator real
Compare the new ES6 spread operator with the traditional concat() method
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<iframe src="https://measurethat.net/Embed?id=596237" 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/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
spread operator
31.1M/s
Array.prototype.concat
8.8M/s
View exact numbers
Test name
Executions per second
✓
spread operator
31,149,410 Ops/sec
Array.prototype.concat
8,793,097 Ops/sec
Tests:
Array.prototype.concat
const params = 7; const other = [ 1, 2 ].concat([params]);
spread operator
const params = [ 1, 2] const other = [...params, 7]