Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:95.0) Gecko/20100101 Firefox/95.0
Firefox 95
Mac OS X 10.15
Desktop
2 years ago
Test name Executions per second
undefined 901355904.0 Ops/sec
typeof 859487040.0 Ops/sec
in 937503424.0 Ops/sec
hasOwnProperty 898569920.0 Ops/sec
bool 881280960.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool


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