MeasureThat.net

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

Object lookup performance

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36
Chrome 89
Mac OS X 11.3.0
Desktop
3 years ago
Test name Executions per second
undefined 3278393.8 Ops/sec
typeof 9697446.0 Ops/sec
in 9609871.0 Ops/sec
hasOwnProperty 8876687.0 Ops/sec
bool 9239364.0 Ops/sec
non strict equal 9742558.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • non strict equal