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-J337A) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.101 Mobile Safari/537.36
Chrome Mobile 87
Android
Mobile
4 years ago
Test name Executions per second
undefined 361700.1 Ops/sec
typeof 1037776.2 Ops/sec
in 1046285.8 Ops/sec
hasOwnProperty 945447.3 Ops/sec
bool 1036091.3 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool