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Run results for:
spread vs concat vs unshift on 1000
spread vs concat vs unshift
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Unshift
21505.4 Ops/sec
Concat
591.5 Ops/sec
Spread
63.9 Ops/sec
Script Preparation code:
var array = new Array(1000).fill(1);
Tests:
Unshift
array.unshift(0);
Concat
array = [0].concat(array)
Spread
array = [0, ...array]