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Run results for: Array concat vs spread operator vs push + spread 2023-08-21

Compare the new ES6 spread operator with the traditional concat() method and push

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Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36
Chrome 117
Linux
Desktop
one year ago
Test name Executions per second
Array.prototype.concat 279399.6 Ops/sec
spread operator 73091.6 Ops/sec
Push 161744.5 Ops/sec
Tests:

  • Array.prototype.concat

    AخA
     
    var params = Array(1500).fill(0);
    params = [ 1 ].concat(params);

  • spread operator

     
    var params = Array(1500).fill(0);
    params = [ 1, ...params ];

  • Push

     
    var params = Array(1500).fill(0);
    [1].push(...params);