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 x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36
Chrome 85
Linux
Desktop
4 years ago
Test name Executions per second
undefined 4348343.5 Ops/sec
typeof 12555441.0 Ops/sec
in 12424618.0 Ops/sec
hasOwnProperty 10053319.0 Ops/sec
bool 12587762.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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