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 10; Mi 9T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.120 Mobile Safari/537.36
Chrome Mobile 91
Android
Mobile
3 years ago
Test name Executions per second
undefined 1442706.5 Ops/sec
typeof 4787676.5 Ops/sec
in 4782639.5 Ops/sec
hasOwnProperty 4050821.2 Ops/sec
bool 4809894.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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