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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=572251" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Windows 8.1
Device Platform:
Desktop
Date tested:
one year ago
array.slice()
8.2M/s
array.shift()
8.1M/s
array.splice()
7.3M/s
View exact numbers
Test name
Executions per second
✓
array.slice()
8,177,138 Ops/sec
array.shift()
8,134,881 Ops/sec
array.splice()
7,266,564 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()