Run results for: myarr unshift vs push + reverse (small array)2

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 month ago

Test name	Executions per second
unshift	0.4 Ops/sec
reverse	260.0 Ops/sec

Script Preparation code:

var arr = Array.from({length: 100000}).map((_, i) => ({i}));

AخA
 
var arr = Array.from({length: 100000}).map((_, i) => ({i}));

Tests:

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

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

reverse
var arr3 = arr.map(o=>({...o})).reverse();
var arr3 = arr.map(o=>({...o})).reverse();