MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Chrome 108
Linux
Desktop
one year ago
Test name Executions per second
undefined 3098748.2 Ops/sec
typeof 10014942.0 Ops/sec
in 10601548.0 Ops/sec
hasOwnProperty 9492431.0 Ops/sec
bool 10456131.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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