Run results for: Array.push + Array.reverse vs Array.unshift

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Array.push + Array.reverse

23K/s

Array.unshift

234/s

View exact numbers

Test name	Executions per second
✓ Array.push + Array.reverse	23,103 Ops/sec
Array.unshift	234 Ops/sec

Script Preparation code:

const array = Array.from({length: 10_000}, () => Math.floor(Math.random() * 10_000_000))

Tests:

Array.push + Array.reverse
const temp = []; array.forEach(x => temp.push(x)); return temp.reverse();
Array.unshift
const temp = []; array.forEach(x => temp.unshift(x)); return temp;