MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Safari/537.36
Chrome 83
Mac OS X 10.15.5
Desktop
4 years ago
Test name Executions per second
undefined 5139900.5 Ops/sec
typeof 15008923.0 Ops/sec
in 15097302.0 Ops/sec
operator 14985426.0 Ops/sec
bool 15116729.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • operator

  • bool

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