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) Chrome/70.0.3538.77 Safari/537.36
Chrome 70
Linux
Desktop
5 years ago
Test name Executions per second
undefined 4366221.5 Ops/sec
typeof 13861024.0 Ops/sec
in 13244422.0 Ops/sec
hasOwnProperty 12905264.0 Ops/sec
bool 14000653.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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