Script Preparation code:
Tests:
  • arr.unshift(42)

  • [42].concat(arr)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    arr.unshift(42)
    [42].concat(arr)

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 4 years ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
Chrome 83 on Mac OS X 10.15.5
View result in a separate tab
Test name Executions per second
arr.unshift(42) 26330.9 Ops/sec
[42].concat(arr) 1664.0 Ops/sec