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_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Chrome 74
Mac OS X 10.14.4
Desktop
5 years ago
Test name Executions per second
undefined 4150620.2 Ops/sec
typeof 11999763.0 Ops/sec
in 11951727.0 Ops/sec
hasOwnProperty 10552954.0 Ops/sec
bool 12094453.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;