MeasureThat.net

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

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/129.0.0.0 Safari/537.36
Chrome 129
Windows
Desktop
2 months ago
Test name Executions per second
undefined 6503876.0 Ops/sec
typeof 17835870.0 Ops/sec
in 17852818.0 Ops/sec
operator 17735038.0 Ops/sec
bool 17962234.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • operator

  • bool