MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 16_0_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.0.2
Mobile
one year ago
Test name Executions per second
undefined 8994991.0 Ops/sec
typeof 27021732.0 Ops/sec
in 25892536.0 Ops/sec
hasOwnProperty 25078212.0 Ops/sec
bool 25596330.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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