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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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.93 Safari/537.36 Vivaldi/2.8.1664.40
Chrome 77
Windows
Desktop
4 years ago
Test name Executions per second
slice 369415.3 Ops/sec
spread operator 343967.3 Ops/sec
push apply into empty array 710665.8 Ops/sec
Array.from 190401.1 Ops/sec
Object.values 69547.2 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • slice

  • spread operator

  • push apply into empty array

  • Array.from

  • Object.values