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Run results for:
Array.prototype.concat vs spread operator on NodeList
Compare the new ES6 spread operator with the traditional concat() method
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=572575" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
push apply into empty array
9.1M/s
slice
8.4M/s
Object.values
6.0M/s
spread operator
3.8M/s
Array.from
3.1M/s
View exact numbers
Test name
Executions per second
✓
push apply into empty array
9,080,717 Ops/sec
slice
8,367,287 Ops/sec
Object.values
5,960,292 Ops/sec
spread operator
3,762,632 Ops/sec
Array.from
3,072,857 Ops/sec
Script Preparation code:
var dom = document.body.querySelectorAll('*')
Tests:
slice
var other = Array.prototype.slice.call(dom);
spread operator
var other = [ ...dom ]
push apply into empty array
var other = []; [].push.apply(other, dom)
Array.from
var other = Array.from(dom);
Object.values
var other = Object.values(dom)