Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/113.0
Firefox 113
Ubuntu
Desktop
one year ago
Test name Executions per second
for...in 66841.7 Ops/sec
Object.keys+forEach (ES5) 41241.4 Ops/sec
for...of - keys (ES6) 42129.6 Ops/sec
for...of - values (ES6) 76194.9 Ops/sec
for...of - entries (ES8) 18627.0 Ops/sec
Object.entries (ES8) 20342.9 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)