Run results for: splice vs unshift

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:71.0) Gecko/20100101 Firefox/71.0

Browser: Firefox 71

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
splice	2571.0 Ops/sec
unshift	565295.7 Ops/sec

Script Preparation code:

var arr = [1,2,3,4,5,6,7,8,9];

Tests: