Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36
Chrome 88
Windows
Desktop
3 years ago
Test name Executions per second
For In 862.6 Ops/sec
Object keys forEach 1168.6 Ops/sec
For(;;) over Object.keys using keys.length 879.8 Ops/sec
Script Preparation code:
Tests:
  • For In

  • Object keys forEach

  • For(;;) over Object.keys using keys.length