MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 16_1_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.1.2
Mobile
one year ago
Test name Executions per second
undefined 11335678.0 Ops/sec
typeof 30385182.0 Ops/sec
in 31131028.0 Ops/sec
hasOwnProperty 29826834.0 Ops/sec
bool 31922044.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;