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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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/68.0.3440.106 Chrome/68.0.3440.106 Safari/537.36
Chromium 68
Ubuntu
Desktop
5 years ago
Test name Executions per second
slice 5371647.0 Ops/sec
spread operator 3909747.0 Ops/sec
concat into empty array 2034263.0 Ops/sec
Array.from 620077.6 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array

  • Array.from