Run results for: Array slice vs for loop vs spread (new Array)

Run details:

User agent: Mozilla/5.0 (Android 15; Mobile; rv:137.0) Gecko/137.0 Firefox/137.0

Browser: Firefox Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

push

29.9M/s

slice

26.2M/s

Spread

8.7M/s

View exact numbers

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]