MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Chrome 108
Windows
Desktop
one year ago
Test name Executions per second
undefined 4560069.0 Ops/sec
typeof 12887055.0 Ops/sec
in 12742360.0 Ops/sec
hasOwnProperty 11010213.0 Ops/sec
bool 12908256.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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