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/91.0.4472.101 Safari/537.36
Chrome 91
Windows
Desktop
3 years ago
Test name Executions per second
undefined 4475702.0 Ops/sec
typeof 12900985.0 Ops/sec
in 13200636.0 Ops/sec
hasOwnProperty 12119947.0 Ops/sec
bool 13317256.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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