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 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36
Chrome 70
Windows 7
Desktop
5 years ago
Test name Executions per second
undefined 1306232.5 Ops/sec
typeof 3400172.5 Ops/sec
in 3997069.5 Ops/sec
hasOwnProperty 4054733.2 Ops/sec
bool 4558554.5 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

;