Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:80.0) Gecko/20100101 Firefox/80.0
Firefox 80
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
for-in 0.3 Ops/sec
Object.keys 0.8 Ops/sec
Script Preparation code:
Tests:
  • for-in

  • Object.keys