Run results for: Object.entries VS Object.keys with obj[key]

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 7 months ago

Object.keys with obj[key]

72.7M/s

Object.entries

16.7M/s

View exact numbers

Test name	Executions per second
✓ Object.keys with obj[key]	72,688,232 Ops/sec
Object.entries	16,709,937 Ops/sec

Script Preparation code:

var obj = {}

for (const key of 'abcdefghijklmnopqrstuvwxyz'.split())
  obj[key] = Math.random()

Tests: