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 Array.prototype.concat vs spread operator (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: slice vs spread operator vs concat into empty array vs Array.from

Created: 6 years ago by: Guest
Jump to the latest result
Script Preparation code:
Tests:

  • slice

  • spread operator

  • concat into empty array

  • Array.from

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    slice
    spread operator
    concat into empty array
    Array.from

    Fastest: N/A

    Slowest: N/A

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Latest run results:
Run details: (Test run date: 4 years ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.113 Safari/537.36
Chrome 81 on Mac OS X 10.15.2
View result in a separate tab
Test name Executions per second
slice 13861940.0 Ops/sec
spread operator 12122410.0 Ops/sec
concat into empty array 4769635.0 Ops/sec
Array.from 4653190.0 Ops/sec