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; rv:62.0) Gecko/20100101 Firefox/62.0
Firefox 62
Windows
Desktop
6 years ago
Test name Executions per second
undefined 164026128.0 Ops/sec
typeof 319813792.0 Ops/sec
in 224780384.0 Ops/sec
hasOwnProperty 229369856.0 Ops/sec
bool 296927424.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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