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/93.0.4577.82 Safari/537.36
Chrome 93
Linux
Desktop
3 years ago
Test name Executions per second
undefined 4299319.5 Ops/sec
typeof 12058452.0 Ops/sec
in 12129907.0 Ops/sec
hasOwnProperty 10873099.0 Ops/sec
bool 12197678.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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