MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Linux; Android 9; SM-G390F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.136 Mobile Safari/537.36
Chrome Mobile 74
Android
Mobile
2 years ago
Test name Executions per second
undefined 343983.4 Ops/sec
typeof 1151898.6 Ops/sec
in 1116804.9 Ops/sec
hasOwnProperty 1021900.9 Ops/sec
bool 1158343.2 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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