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Run results for:
Array slice vs for loop vs spread (new Array)
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0
Browser:
Firefox 139
Operating system:
Windows
Device Platform:
Desktop
Date tested:
11 months ago
Test name
Executions per second
slice
35591520.0 Ops/sec
push
34201556.0 Ops/sec
Spread
8515679.0 Ops/sec
Script Preparation code:
const data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];
Tests:
slice
const copy = data.slice(0, 5);
push
const copy = new Array(5); for (let i = 0; i < 5; i++) { copy[i] = data[i]; }
Spread
const copy = [...data]