Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1
Mobile Safari 15
iOS 15.4
Mobile
2 years ago
Test name Executions per second
Object.keys 44.2 Ops/sec
for-in with var 52.0 Ops/sec
for-in with let 52.1 Ops/sec
Script Preparation code:
Tests:
  • Object.keys

  • for-in with var

  • for-in with let