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Run results for: spread vs concat

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/604.4.6 (KHTML, like Gecko) Version/11.0.2 Safari/604.4.6
Safari 11
Mac OS X 10.11.6
Other
7 years ago
Test name Executions per second
Spread 23900594.0 Ops/sec
Concat 14140795.0 Ops/sec
Tests:

  • Spread

    AخA
     
    let arr = [];
    let a = [1,'a',{'a':'bla'},];
    arr = [...arr, ...a];

  • Concat

     
    let arr = [];
    let a = [1,'a',{'a':'bla'},];
    arr = arr.concat(a);