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_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.75 Safari/537.36
Chrome 71
Mac OS X 10.14.1
Desktop
5 years ago
Test name Executions per second
undefined 4060247.5 Ops/sec
typeof 12997253.0 Ops/sec
in 12050207.0 Ops/sec
hasOwnProperty 11777856.0 Ops/sec
bool 13182075.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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