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Run results for:
Slice vs Splice vs Shift
Compares the speed for removing 2 items from the beginning of an array
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<iframe src="https://measurethat.net/Embed?id=622440" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7.2 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.7
Device Platform:
Mobile
Date tested:
7 months ago
array.splice()
44.6M/s
array.shift()
40.9M/s
array.slice()
35.1M/s
View exact numbers
Test name
Executions per second
✓
array.splice()
44,559,336 Ops/sec
array.shift()
40,949,964 Ops/sec
array.slice()
35,132,456 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()