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_7_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.7.5
Mobile
8 months ago
Test name Executions per second
undefined 1952559.8 Ops/sec
typeof 5960550.0 Ops/sec
in 5906280.5 Ops/sec
hasOwnProperty 5756778.5 Ops/sec
bool 5618466.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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