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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser: Chrome 113

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
unshift	0.2 Ops/sec
push + reverse	61.6 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);}