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/88.0.4324.150 Safari/537.36
Chrome 88
Windows
Desktop
3 years ago
Test name Executions per second
undefined 3608038.8 Ops/sec
typeof 9967658.0 Ops/sec
in 9969553.0 Ops/sec
hasOwnProperty 9021778.0 Ops/sec
bool 9901147.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;