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Run results for: concat vs unshift vs spread

spread vs concat vs unshift

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Mac OS X 10.15.7
Desktop
4 months ago
Test name Executions per second
arrayUnshift123 31335.6 Ops/sec
arrayConcat123 1229.5 Ops/sec
spread 149.2 Ops/sec
Script Preparation code:
AخA
 
var array = [1,2,3];
Tests:

  • arrayUnshift123

     
    array.unshift(0);

  • arrayConcat123

     
    array = [0].concat(array)

  • spread

     
    array = [0,...array]