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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=621424" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:145.0) Gecko/20100101 Firefox/145.0
Browser:
Firefox 145
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
8 months ago
array.slice()
29.2M/s
array.splice()
20.7M/s
array.shift()
28K/s
View exact numbers
Test name
Executions per second
✓
array.slice()
29,201,100 Ops/sec
array.splice()
20,733,506 Ops/sec
array.shift()
27,572 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()