MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Chrome 129
Windows
Desktop
one month ago
Test name Executions per second
undefined 11665184.0 Ops/sec
typeof 30724782.0 Ops/sec
in 30449854.0 Ops/sec
hasOwnProperty 27652482.0 Ops/sec
bool 30286600.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;