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; SM-G955U) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.90 Mobile Safari/537.36
Chrome Mobile 73
Android
Mobile
5 years ago
Test name Executions per second
undefined 1297183.2 Ops/sec
typeof 3788952.5 Ops/sec
in 3474425.0 Ops/sec
hasOwnProperty 3386100.8 Ops/sec
bool 3794866.8 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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