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Run results for: Array.prototype.concat vs spread operator

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

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299
Chrome 58
Windows
Other
2025 years ago
Test name Executions per second
Array.prototype.concat 3608025.2 Ops/sec
spread operator 1975189.4 Ops/sec
jQuery merge 2774980.0 Ops/sec
Tests:

  • Array.prototype.concat

    AخA
     
    var params = [ "hello", true, 7 ];
    var other = [ 1, 2 ].concat(params);

  • spread operator

     
    var params = [ "hello", true, 7 ]
    var other = [ 1, 2, ...params ]

  • jQuery merge

     
    var params = [ "hello", true, 7 ];
    var other = $.merge([1, 2], params);