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Run results for:
Copy Array
Speed of array cloning
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=617306" 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/140.0.0.0 Safari/537.36
Browser:
Chrome 140
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
10 months ago
Slice
6K/s
Slice(0)
6K/s
concat
6K/s
Spread
1K/s
View exact numbers
Test name
Executions per second
✓
Slice
5,953 Ops/sec
Slice(0)
5,895 Ops/sec
concat
5,854 Ops/sec
Spread
1,459 Ops/sec
Script Preparation code:
var len = 1000*1000; var arr = new Array(len);
Tests:
Spread
var arr2 = [...arr];
Slice
var arr2 = arr.slice();
Slice(0)
var arr2 = arr.slice(0);
concat
var arr2 = arr.concat();