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Run results for:
new Array from vs slice vs push vs index vs spread
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=541567" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.1
Device Platform:
Mobile
Date tested:
one year ago
Array.push
4.7M/s
Array[index]
3.9M/s
Array.slice
3.1M/s
Array.from
2.7M/s
Array spread
2.7M/s
View exact numbers
Test name
Executions per second
✓
Array.push
4,672,757 Ops/sec
Array[index]
3,852,302 Ops/sec
Array.slice
3,149,884 Ops/sec
Array.from
2,730,574 Ops/sec
Array spread
2,666,053 Ops/sec
Tests:
Array.from
const elements = document.all; const arr = Array.from(elements);
Array.slice
const elements = document.all; const arr = Array.prototype.slice.call(elements, 0);
Array.push
const elements = document.all; const amount = elements.length; const arr = []; for (let i = 0; i < amount; i += 1) arr.push(elements[i]);
Array[index]
const elements = document.all; const amount = elements.length; const arr = Array(amount); for (let i = 0; i < amount; i += 1) arr[i] = elements[i];
Array spread
const elements = document.all; const arr = [...elements];