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/132.0.0.0 Safari/537.36 Edg/132.0.0.0
Chrome 132
Windows
Desktop
2 months ago
Test name Executions per second
undefined 79664968.0 Ops/sec
typeof 83357408.0 Ops/sec
in 84228408.0 Ops/sec
hasOwnProperty 54537628.0 Ops/sec
bool 80223664.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool