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/92.0.4515.159 Safari/537.36 Edg/92.0.902.84
Chrome 92
Windows
Desktop
3 years ago
Test name Executions per second
undefined 4732872.0 Ops/sec
typeof 13201454.0 Ops/sec
in 13135331.0 Ops/sec
hasOwnProperty 11795889.0 Ops/sec
bool 12858687.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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