MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux i586; rv:83.0) Gecko/20100101 Firefox/83.0
Firefox 83
Linux
Desktop
3 years ago
Test name Executions per second
undefined 123541192.0 Ops/sec
typeof 424265216.0 Ops/sec
in 178427216.0 Ops/sec
hasOwnProperty 174089920.0 Ops/sec
bool 426516160.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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