Run results for: slice vs splice - Remove items from the beginning of an array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 Safari/537.36

Browser: Chrome 91

Operating system: Mac OS X 10.14.4

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
slice	5.9 Ops/sec
splice	4.5 Ops/sec

Tests:

slice
let data = [...new Array(10000)].map((a,i) => i); for (let i = 0; i < 10000; i++) { let arr = [...data]; arr = arr.slice(-5000); }
splice
let data = [...new Array(10000)].map((a,i) => i); for (let i = 0; i < 10000; i++) { let arr = [...data]; arr.splice(0, arr.length - 5000); }