MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
Chrome 70
Linux
Desktop
5 years ago
Test name Executions per second
undefined 3108676.8 Ops/sec
typeof 10590953.0 Ops/sec
in 10325533.0 Ops/sec
hasOwnProperty 9642768.0 Ops/sec
bool 10722296.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;