MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.96 Safari/537.36
Chrome 72
Windows
Desktop
5 years ago
Test name Executions per second
undefined 3192270.8 Ops/sec
typeof 9896600.0 Ops/sec
in 9010918.0 Ops/sec
hasOwnProperty 8910552.0 Ops/sec
bool 9992328.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;