Run results for: concat vs unshift

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0

Browser: Firefox 88

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
arrayUnshift123	544629.9 Ops/sec
arrayConcat123	12.3 Ops/sec

Script Preparation code:

var array = [1,2,3];

Tests: