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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=554295" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0
Browser:
Firefox 130
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
array.shift()
165.7M/s
array.slice()
65.0M/s
array.splice()
45.7M/s
View exact numbers
Test name
Executions per second
✓
array.shift()
165,689,488 Ops/sec
array.slice()
65,011,564 Ops/sec
array.splice()
45,673,168 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()