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Run results for:
Slice vs Splice vs Shift (Large Array 2)
Compares the speed for removing items from the beginning of an array
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<iframe src="https://measurethat.net/Embed?id=592279" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; CrOS x86_64 14695.114.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Browser:
Chrome 102
Operating system:
Chrome OS 14695.114.0
Device Platform:
Desktop
Date tested:
one year ago
array.splice()
6.7M/s
array.slice()
712K/s
array.shift()
18K/s
View exact numbers
Test name
Executions per second
✓
array.splice()
6,672,610 Ops/sec
array.slice()
712,342 Ops/sec
array.shift()
17,557 Ops/sec
Script Preparation code:
var array = Array(10000).fill(0) var itemsToRemove = 5000
Tests:
array.slice()
array = array.slice(itemsToRemove)
array.splice()
array.splice(0, itemsToRemove)
array.shift()
for (let i = 0 ; i < itemsToRemove ; i++) array.shift()