MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1.2 Safari/605.1.15
Safari 11
Mac OS X 10.13.6
Desktop
6 years ago
Test name Executions per second
undefined 3934433.0 Ops/sec
typeof 10255936.0 Ops/sec
in 10371977.0 Ops/sec
hasOwnProperty 11870817.0 Ops/sec
bool 11535703.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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