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/102.0.5005.115 Safari/537.36
Chrome 102
Windows
Desktop
2 years ago
Test name Executions per second
undefined 4037989.2 Ops/sec
typeof 11980284.0 Ops/sec
in 11917384.0 Ops/sec
hasOwnProperty 10888166.0 Ops/sec
bool 11968248.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool