Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0
Firefox 81
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
For In 888.9 Ops/sec
Object keys forEach 880.8 Ops/sec
Script Preparation code:
Tests:
  • For In

  • Object keys forEach