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Run results for:
Array concat vs spread operator vs spread with 2
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=526471" 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/125.0.0.0 Safari/537.36
Browser:
Chrome 125
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
spread operator
46.1M/s
spread operator 2
37.0M/s
Array.prototype.concat
14.4M/s
View exact numbers
Test name
Executions per second
✓
spread operator
46,109,456 Ops/sec
spread operator 2
37,036,720 Ops/sec
Array.prototype.concat
14,382,587 Ops/sec
Tests:
Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
spread operator 2
var params1 = [ 1, 2 ] var params2 = [ "hello", true, 7 ] var other = [ ...params1, ...params2 ]