MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Linux; Android 10; EVR-AL00) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36
Chrome Mobile 81
Android
Mobile
4 years ago
Test name Executions per second
undefined 1791872.2 Ops/sec
typeof 4398927.5 Ops/sec
in 4472250.0 Ops/sec
hasOwnProperty 4212081.5 Ops/sec
bool 4471002.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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