MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Linux; Android 9; MI 8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Mobile Safari/537.36
Chrome Mobile 74
Android
Mobile
5 years ago
Test name Executions per second
undefined 2210735.8 Ops/sec
typeof 6051001.0 Ops/sec
in 6013496.5 Ops/sec
hasOwnProperty 5558767.0 Ops/sec
bool 6023023.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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