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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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36
Chrome 66
Linux
Other
6 years ago
Test name Executions per second
arrayUnshift 6893.1 Ops/sec
arrayConcat 730.1 Ops/sec
arraySpread 62.3 Ops/sec
Script Preparation code:
AخA
 
var array = [1,2,3];
Tests:

  • arrayUnshift

     
    array.unshift(0);

  • arrayConcat

     
    array = [0].concat(array)

  • arraySpread

     
    array = [0, ...array]