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 10.12; rv:60.0) Gecko/20100101 Firefox/60.0
Firefox 60
Mac OS X 10.12
Desktop
6 years ago
Test name Executions per second
undefined 122668720.0 Ops/sec
typeof 191257024.0 Ops/sec
in 154689088.0 Ops/sec
hasOwnProperty 147061088.0 Ops/sec
bool 199171680.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;