Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36
Chrome 114
Mac OS X 10.15.7
Desktop
one year ago
Test name Executions per second
exist null 12008927.0 Ops/sec
exist hasOwnProperty 10490758.0 Ops/sec
nonexist null 12014979.0 Ops/sec
nonexist hasOwnProperty 10252123.0 Ops/sec
Script Preparation code:
Tests:
  • exist null

  • exist hasOwnProperty

  • nonexist null

  • nonexist hasOwnProperty