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/132.0.0.0 Safari/537.36 Edg/132.0.0.0
Chrome 132
Windows
Desktop
2 months ago
Test name Executions per second
undefined 174874096.0 Ops/sec
typeof 192708576.0 Ops/sec
in 177521840.0 Ops/sec
operator 180025376.0 Ops/sec
bool 177296096.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • operator

  • bool