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/128.0.0.0 Safari/537.36
Chrome 128
Windows
Desktop
2 months ago
Test name Executions per second
undefined 8904895.0 Ops/sec
typeof 21583114.0 Ops/sec
in 20092508.0 Ops/sec
hasOwnProperty 14776040.0 Ops/sec
bool 14984413.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;