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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 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36
Chrome 66
Mac OS X 10.13.3
Other
6 years ago
Test name Executions per second
slice 7831576.0 Ops/sec
spread operator 2682734.0 Ops/sec
concat into empty array 3169727.0 Ops/sec
Array.from 1034626.0 Ops/sec
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Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array

  • Array.from