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/110.0.0.0 Safari/537.36
Chrome 110
Linux
Desktop
one year ago
Test name Executions per second
undefined 6447968.0 Ops/sec
typeof 18512608.0 Ops/sec
in 18568540.0 Ops/sec
hasOwnProperty 16481544.0 Ops/sec
bool 18521542.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;