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_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Chrome 70
Mac OS X 10.14.0
Desktop
5 years ago
Test name Executions per second
undefined 3237341.8 Ops/sec
typeof 11393406.0 Ops/sec
in 10321585.0 Ops/sec
hasOwnProperty 10154029.0 Ops/sec
bool 11322884.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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