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 10.13; rv:64.0) Gecko/20100101 Firefox/64.0
Firefox 64
Mac OS X 10.13
Desktop
6 years ago
Test name Executions per second
undefined 130623584.0 Ops/sec
typeof 258422864.0 Ops/sec
in 195871216.0 Ops/sec
hasOwnProperty 190614624.0 Ops/sec
bool 255096944.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;