MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36
Chrome 85
Mac OS X 10.15.7
Desktop
4 years ago
Test name Executions per second
undefined 5044837.0 Ops/sec
typeof 14245674.0 Ops/sec
in 14135575.0 Ops/sec
hasOwnProperty 11941296.0 Ops/sec
bool 13850553.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;