MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36
Chrome 85
Windows
Desktop
4 years ago
Test name Executions per second
undefined 3412859.2 Ops/sec
typeof 9691480.0 Ops/sec
in 9654011.0 Ops/sec
hasOwnProperty 8978950.0 Ops/sec
bool 9602931.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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