Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Chrome 67
Mac OS X 10.13.6
Desktop
6 years ago
Test name Executions per second
For In 437.2 Ops/sec
Object keys forEach 457.3 Ops/sec
Script Preparation code:
Tests:
  • For In

  • Object keys forEach