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_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Chrome 67
Mac OS X 10.12.6
Desktop
6 years ago
Test name Executions per second
undefined 3874483.5 Ops/sec
typeof 13261231.0 Ops/sec
in 12391814.0 Ops/sec
hasOwnProperty 12006431.0 Ops/sec
bool 13321661.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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