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Run results for:
Array.prototype.concat vs spread oper
Compare the new ES6 spread operator with the traditional concat() method
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<iframe src="https://measurethat.net/Embed?id=589878" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Array.prototype.concat
4K/s
spread operator
3K/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.concat
4,059 Ops/sec
spread operator
2,779 Ops/sec
Script Preparation code:
let big = (new Array(1e5)).fill(99);
Tests:
Array.prototype.concat
var other = big.concat(2);
spread operator
var other = [ ...big, 2 ]