MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36
Chrome 73
Linux
Desktop
5 years ago
Test name Executions per second
undefined 4628200.5 Ops/sec
typeof 14797134.0 Ops/sec
in 13638181.0 Ops/sec
hasOwnProperty 13221597.0 Ops/sec
bool 14317423.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;