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/92.0.4515.107 Safari/537.36
Chrome 92
Windows
Desktop
3 years ago
Test name Executions per second
undefined 2495413.2 Ops/sec
typeof 7016691.5 Ops/sec
in 6871474.5 Ops/sec
hasOwnProperty 6045761.0 Ops/sec
bool 6898383.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;