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/99.0.4844.51 Safari/537.36
Chrome 99
Windows
Desktop
2 years ago
Test name Executions per second
undefined 6941278.0 Ops/sec
typeof 19343172.0 Ops/sec
in 18945162.0 Ops/sec
hasOwnProperty 17800734.0 Ops/sec
bool 19394908.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;