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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_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
Chrome 75
Mac OS X 10.14.0
Desktop
4 years ago
Test name Executions per second
slice 936738.6 Ops/sec
spread operator 9048235.0 Ops/sec
concat into empty array 1960050.0 Ops/sec
Array.from 3574860.0 Ops/sec
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Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array

  • Array.from