MeasureThat.net

Run results for: undefined vs. typeof vs. in vs. hasOwnProperty

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/78.0.3904.108 Chrome/78.0.3904.108 Safari/537.36
Chromium 78
Ubuntu
Desktop
4 years ago
Test name Executions per second
undefined 2574358.2 Ops/sec
typeof 9504121.0 Ops/sec
in 8363905.0 Ops/sec
hasOwnProperty 6698863.0 Ops/sec
bool 7921430.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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