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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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.113 Safari/537.36 Edg/81.0.416.58
Chrome 81
Windows
Desktop
4 years ago
Test name Executions per second
slice 9079420.0 Ops/sec
spread operator 8442634.0 Ops/sec
concat into empty array 3489003.0 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array