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Run results for: spread vs concat vs unshift

spread vs concat vs unshift

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Run details:
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0
Firefox 60
Windows
Desktop
5 years ago
Test name Executions per second
arrayUnshift123 552562.1 Ops/sec
arrayConcat123 26.0 Ops/sec
arraySpread123 17.6 Ops/sec
Script Preparation code:
AخA
 
var array = [1,2,3];
Tests:

  • arrayUnshift123

     
    array.unshift(0);

  • arrayConcat123

     
    array = array.concat([0])

  • arraySpread123

     
    array = [0, ...array]