Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Chrome 120
Mac OS X 10.15.7
Desktop
6 months ago
Test name Executions per second
for...in 3910.2 Ops/sec
Object.keys+forEach (ES5) 5219.3 Ops/sec
for...of - keys (ES6) 5614.8 Ops/sec
for...of - values (ES6) 5061.4 Ops/sec
for...of - entries (ES8) 4403.5 Ops/sec
Object.entries (ES8) 4360.0 Ops/sec
Script Preparation code:
Tests:
  • for...in

  • Object.keys+forEach (ES5)

  • for...of - keys (ES6)

  • for...of - values (ES6)

  • for...of - entries (ES8)

  • Object.entries (ES8)