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_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36
Chrome 55
Mac OS X 10.12.3
Other
7 years ago
Test name Executions per second
undefined 4047018.0 Ops/sec
typeof 12565225.0 Ops/sec
in 11625844.0 Ops/sec
hasOwnProperty 11531407.0 Ops/sec
truthy 12554636.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • truthy

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