Run results for: Splice vs Spread vs Unshift to insert at beginning of array (fixed from slice)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Splice

27K/s

Unshift

14K/s

Spread

191/s

View exact numbers

Script Preparation code:

var array = Array.from({ length: 100 }).map((val, i) => i);

Tests: