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/68.0.3440.75 Safari/537.36
Chrome 68
Linux
Desktop
6 years ago
Test name Executions per second
undefined 3480085.0 Ops/sec
typeof 13508767.0 Ops/sec
in 12634132.0 Ops/sec
hasOwnProperty 12118037.0 Ops/sec
bool 13783969.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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