MeasureThat.net

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

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/86.0.4240.183 Safari/537.36
Chrome 86
Windows
Desktop
4 years ago
Test name Executions per second
undefined 2015606.2 Ops/sec
typeof 5280460.5 Ops/sec
in 5217379.0 Ops/sec
hasOwnProperty 4815694.5 Ops/sec
bool 5135713.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;