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Run results for:
spread vs concat vs unshift
spread vs concat vs unshift
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=490025" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0
Browser:
Firefox 120
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
2 years ago
arrayUnshift123
499K/s
arrayConcat123
23/s
arraySpread123
10/s
View exact numbers
Test name
Executions per second
✓
arrayUnshift123
499,384 Ops/sec
arrayConcat123
23 Ops/sec
arraySpread123
10 Ops/sec
Script Preparation code:
var array = [1,2,3];
Tests:
arrayUnshift123
array.unshift(0);
arrayConcat123
array = array.concat([0])
arraySpread123
array = [0, ...array]