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Run results for:
slice vs subarray vs set custom
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=495005" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0
Browser:
Firefox 120
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
subarray direct
21894566.0 Ops/sec
slice direct
37058392.0 Ops/sec
subarray copy
13435538.0 Ops/sec
slice copy
17294998.0 Ops/sec
subarray set
17401070.0 Ops/sec
slice set
24893508.0 Ops/sec
Script Preparation code:
var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; var u8 = new Uint8Array(data);
Tests:
subarray direct
var copy = u8.subarray(10, 20);
slice direct
var copy = u8.slice(10, 20);
subarray copy
var copy = new Uint8Array(u8.subarray(10, 20));
slice copy
var copy = new Uint8Array(u8.slice(10, 20));
subarray set
var copy = new Uint8Array(10).set(u8.subarray(10, 20));
slice set
var copy = new Uint8Array(10).set(u8.slice(10, 20));