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/63.0.3239.132 Safari/537.36
Chrome 63
Windows
Other
2025 years ago
Test name Executions per second
undefined 1489316.4 Ops/sec
typeof 4997235.5 Ops/sec
in 4369997.5 Ops/sec
hasOwnProperty 4343342.5 Ops/sec
bool 4954429.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool