MeasureThat.net

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

Object lookup performance

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Run details:
Mozilla/5.0 (Android 13; Mobile; rv:124.0) Gecko/124.0 Firefox/124.0
Firefox Mobile 124
Android
Mobile
8 months ago
Test name Executions per second
undefined 155064144.0 Ops/sec
typeof 155152272.0 Ops/sec
in 154979344.0 Ops/sec
hasOwnProperty 154580976.0 Ops/sec
bool 155062736.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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