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

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_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36 Edg/80.0.361.48
Chrome 80
Mac OS X 10.15.2
Desktop
4 years ago
Test name Executions per second
slice 554463.8 Ops/sec
spread operator 510313.6 Ops/sec
push apply into empty array 1608106.0 Ops/sec
Array.from 361842.3 Ops/sec
Object.values 102769.0 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • slice

  • spread operator

  • push apply into empty array

  • Array.from

  • Object.values