Run results for: myarr unshift vs push + reverse (small array)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.2.1

Device Platform: Mobile

Date tested: one year ago

push + reverse

168K/s

unshift

5K/s

View exact numbers

Test name	Executions per second
✓ push + reverse	168,134 Ops/sec
unshift	4,566 Ops/sec

Script Preparation code:

var arr = Array.from({length: 1000});

Tests:

unshift
var arr2 = []; for (let i = 0; i < arr.length; i++){ arr2.unshift(arr[i]); }
push + reverse
var arr3 = [...arr].reverse();