Run results for: Splice vs Spread vs Unshift to insert at beginning of array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0

Browser: Firefox 56

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

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

Tests: