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Run results for:
Array.prototype.concat vs spread operator vs Array.prototype.push & Array.from
Compare the new ES6 spread operator with the traditional concat() method
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<iframe src="https://measurethat.net/Embed?id=505526" 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/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Array.prototype.concat
221339.7 Ops/sec
spread operator
885321.9 Ops/sec
Array.prototype.push & Array.from
1892.2 Ops/sec
Script Preparation code:
var data = [...Array(1000).keys()];
Tests:
Array.prototype.concat
const data2 = data.concat('hellow', true, 7);
spread operator
const data2 = [...data, "hello", true, 7]
Array.prototype.push & Array.from
data.push('hello', true, 7) const data2 = Array.from(data.values())