MeasureThat.net

Run results for: [].concat vs spread operator

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

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36
Chrome 81
Mac OS X 10.14.6
Desktop
4 years ago
Test name Executions per second
Array.prototype.concat 6494781.5 Ops/sec
spread operator 21639738.0 Ops/sec
Tests:

  • Array.prototype.concat

    AخA
     
    var params = [ "hello", {one: 'two'} , 4, 3, 2, ['one', 'two', 'three'] ];
    var other = [ 1, 2 ].concat(params);

  • spread operator

     
    var params = [ "hello", {one: 'two'} , 4, 3, 2, ['one', 'two', 'three'] ];
    var other = [ 1, 2, ...params ]