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 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36
Chrome 86
Mac OS X 10.14.6
Desktop
3 years ago
Test name Executions per second
undefined 4656144.5 Ops/sec
typeof 14541972.0 Ops/sec
in 14677947.0 Ops/sec
hasOwnProperty 12197580.0 Ops/sec
bool 15022778.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;