Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 15_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/100.1 Mobile/15E148 Safari/605.1.15
Mobile Safari 15
iOS 15.4.1
Mobile
2 years ago
Test name Executions per second
exist null 17353982.0 Ops/sec
exist hasOwnProperty 16080692.0 Ops/sec
nonexist null 17381826.0 Ops/sec
nonexist hasOwnProperty 16635240.0 Ops/sec
Script Preparation code:
Tests:
  • exist null

  • exist hasOwnProperty

  • nonexist null

  • nonexist hasOwnProperty