MeasureThat.net

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

Object lookup performance

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0
Chrome 135
Windows
Desktop
11 days ago
Test name Executions per second
undefined 89231552.0 Ops/sec
typeof 89163272.0 Ops/sec
in 87133264.0 Ops/sec
operator 85251144.0 Ops/sec
bool 82815928.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • operator

  • bool