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Run results for:
Array concat vs spread operator vs push (via for loop)
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=616442" 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/139.0.0.0 Safari/537.36
Browser:
Chrome 139
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
11 months ago
spread operator
74.4M/s
Array.prototype.concat
24.0M/s
Push
16.3M/s
View exact numbers
Test name
Executions per second
✓
spread operator
74,355,152 Ops/sec
Array.prototype.concat
23,956,306 Ops/sec
Push
16,326,319 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 ]
Push
var params = [ "hello", true, 7 ]; const other = params for(const param in params){ other.push(param) }