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Run results for:
Array concat vs spread operator vs push (forEach)
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=567303" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 Safari/537.36
Browser:
Chrome 91
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Push
27.0M/s
spread operator
23.3M/s
Array.prototype.concat
4.9M/s
View exact numbers
Test name
Executions per second
✓
Push
26,969,750 Ops/sec
spread operator
23,303,482 Ops/sec
Array.prototype.concat
4,900,836 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 ]; var other = [ 1, 2 ]; other.forEach((item) => { other.push(item); });