MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36
Chrome 63
Mac OS X 10.12.6
Other
2025 years ago
Test name Executions per second
undefined 4130522.0 Ops/sec
typeof 12624841.0 Ops/sec
in 11629925.0 Ops/sec
hasOwnProperty 10517516.0 Ops/sec
bool 12367078.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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