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/126.0.0.0 Safari/537.36
Chrome 126
Windows
Desktop
3 months ago
Test name Executions per second
undefined 4057736.2 Ops/sec
typeof 10443824.0 Ops/sec
in 10858946.0 Ops/sec
hasOwnProperty 9284776.0 Ops/sec
bool 10417321.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;