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Run results for: Slice vs Splice vs Shift in cycle

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

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Chrome 124
Mac OS X 10.15.7
Desktop
one year ago
Test name Executions per second
array.slice() 1587958.4 Ops/sec
array.splice() 2284566.0 Ops/sec
array.shift() 2556044.5 Ops/sec
Script Preparation code:
AخA
 
var array = [1, 2, 3, 4, 5, 6, 7, 8]
var itemsToRemove = 5
Tests:

  • array.slice()

     
    for (let i = 0 ; i < itemsToRemove ; i++) array = array.slice(1)

  • array.splice()

     
    for (let i = 0 ; i < itemsToRemove ; i++) array.splice(0, 1)

  • array.shift()

     
    for (let i = 0 ; i < itemsToRemove ; i++) array.shift()