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 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Chrome 74
Windows 7
Desktop
5 years ago
Test name Executions per second
undefined 4247619.0 Ops/sec
typeof 11726195.0 Ops/sec
in 11834774.0 Ops/sec
hasOwnProperty 10427122.0 Ops/sec
bool 11810828.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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