MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Mobile/15E148 Safari/604.1
Mobile Safari 14
iOS 14.4
Mobile
3 years ago
Test name Executions per second
undefined 5415998.5 Ops/sec
typeof 15605341.0 Ops/sec
in 15819007.0 Ops/sec
hasOwnProperty 15242405.0 Ops/sec
bool 15443088.0 Ops/sec
non strict equal 15215307.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • non strict equal