Run results for: arr unshift vs push + reverse (large array)

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:125.0) Gecko/125.0 Firefox/125.0

Browser: Firefox Mobile 125

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
unshift	5.3 Ops/sec
push + reverse	27.0 Ops/sec

Script Preparation code:

var arr = [];

AخA
 
var arr = [];

Tests:

for (let i = 0; i < 100000; i++){
  arr.unshift(i);
}

 
for (let i = 0; i < 100000; i++){  arr.unshift(i);}