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Run results for: concat vs plus string

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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
5 months ago
Test name Executions per second
Array.prototype.concat 170804064.0 Ops/sec
spread operator 169480032.0 Ops/sec
Tests:

  • Array.prototype.concat

    AخA
     
    var str1 = "Hello ";
    var str2 = "world!";
    var res = str1.concat(str2);

  • spread operator

     
    var str1 = "Hello ";
    var str2 = "world!";
    var res = str1+str2;