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/69.0.3497.100 Safari/537.36
Chrome 69
Mac OS X 10.14.0
Desktop
6 years ago
Test name Executions per second
undefined 4059051.8 Ops/sec
typeof 13661777.0 Ops/sec
in 12428414.0 Ops/sec
hasOwnProperty 11983824.0 Ops/sec
truthy 13510097.0 Ops/sec
local undef 6814484.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • truthy

  • local undef

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