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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_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36
Chrome 71
Mac OS X 10.14.1
Desktop
5 years ago
Test name Executions per second
slice 10596600.0 Ops/sec
spread operator 10447000.0 Ops/sec
concat into empty array 3804097.0 Ops/sec
Array.from 1181836.0 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array

  • Array.from