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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:129.0) Gecko/20100101 Firefox/129.0

Browser: Firefox 129

Operating system: Linux

Device Platform: Desktop

Date tested: 28 days ago

Test name	Executions per second
array.slice()	56786530.0 Ops/sec
array.splice()	35554470.0 Ops/sec
array.shift()	115364600.0 Ops/sec

Website performance monitoring

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()