MeasureThat.net

Run results for: undefined vs. typeof vs. in vs. hasOwnProperty

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.72 Safari/537.36
Chrome 90
Linux
Desktop
3 years ago
Test name Executions per second
undefined 5274786.0 Ops/sec
typeof 15060552.0 Ops/sec
in 14913127.0 Ops/sec
hasOwnProperty 13412987.0 Ops/sec
bool 15271506.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;