Run results for: Slice vs Splice vs Shift vs Spread syntax - MeasureThat.net

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: 6 months ago

Test name	Executions per second
array.slice()	4243229.5 Ops/sec
array.splice()	5702975.0 Ops/sec
array.shift()	2342560.8 Ops/sec
Spread syntax	4360096.0 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()
Spread syntax
var [one, tow, ...others] = array; array = others;