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Run results for:
spread vs concat vs unshift 2
spread vs concat vs unshift
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<iframe src="https://measurethat.net/Embed?id=573110" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
arrayUnshift123
740357.0 Ops/sec
arrayConcat123
34.0 Ops/sec
arraySpread123
9.4 Ops/sec
Script Preparation code:
var array = (new Array(10000)).fill(null).map((el, index) => index);
Tests:
arrayUnshift123
array.unshift(0);
arrayConcat123
array = array.concat([0])
arraySpread123
array = [0, ...array]