MeasureThat.net

Run results for: undefined vs. typeof vs. in vs. hasOwnProperty vs. Optional chaining

Object lookup performance

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
Chrome 105
Windows
Desktop
2 years ago
Test name Executions per second
undefined 5643658.5 Ops/sec
typeof 15503426.0 Ops/sec
in 14992270.0 Ops/sec
hasOwnProperty 13245157.0 Ops/sec
bool 15395800.0 Ops/sec
?. 15308535.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • ?.

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