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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

push + reverse

892K/s

unshift

19K/s

View exact numbers

Test name	Executions per second
✓ push + reverse	891,880 Ops/sec
unshift	18,893 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();