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/114.0.0.0 Safari/537.36
Chrome 114
Linux
Desktop
one year ago
Test name Executions per second
undefined 9300184.0 Ops/sec
typeof 25318276.0 Ops/sec
in 25205328.0 Ops/sec
hasOwnProperty 22765332.0 Ops/sec
bool 25301718.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;