Run results for: Slice vs Splice vs Shift

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.151 Whale/3.14.134.62 Safari/537.36

Browser: Chrome 100

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
array.slice()	5757413.0 Ops/sec
array.splice()	6436414.0 Ops/sec
array.shift()	3077933.0 Ops/sec

Script Preparation code:

var array = [1, 2, 3, 4, 5, 6, 7, 8]
var itemsToRemove = 2

Tests:

array.slice()
array = array.slice(2)
array.splice()
array.splice(0, itemsToRemove)
array.shift()
for (let i = 0 ; i < itemsToRemove ; i++) array.shift()

Run results for: Slice vs Splice vs Shift

Compares the speed for removing 2 items from the beginning of an array

array.slice()

array.splice()

array.shift()