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/92.0.4515.107 Safari/537.36 Edg/92.0.902.55
Chrome 92
Windows
Desktop
3 years ago
Test name Executions per second
undefined 5009892.0 Ops/sec
typeof 13248948.0 Ops/sec
in 13338735.0 Ops/sec
hasOwnProperty 11891075.0 Ops/sec
bool 13314218.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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