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 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.67 Safari/537.36
Chrome 87
Mac OS X 11.0.1
Desktop
3 years ago
Test name Executions per second
undefined 5202240.5 Ops/sec
typeof 15067126.0 Ops/sec
in 14981362.0 Ops/sec
hasOwnProperty 12911637.0 Ops/sec
bool 15019921.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;