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/66.0.3359.181 Safari/537.36
Chrome 66
Windows
Desktop
6 years ago
Test name Executions per second
undefined 3555116.5 Ops/sec
typeof 11601570.0 Ops/sec
in 10554970.0 Ops/sec
hasOwnProperty 10810672.0 Ops/sec
bool 11621663.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool