Script Preparation code:
x
 
var obj = {}
for (const key of 'abcdefghijklmnopqrstuvwxyz'.split())
  obj[key] = Math.random()
Tests:
  • Object.keys with obj[key]

     
    Object.keys(obj).map((key) => [key, obj[key]])
  • Object.entries

     
    Object.entries(obj).map(([key, value]) => [key, value])
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    Object.keys with obj[key]
    Object.entries

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 8 months ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120 on Mac OS X 10.15
View result in a separate tab
Test name Executions per second
Object.keys with obj[key] 15630284.0 Ops/sec
Object.entries 9898636.0 Ops/sec