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/114.0.0.0 Safari/537.36
Chrome 114
Windows
Desktop
one year ago
Test name Executions per second
undefined 5421988.0 Ops/sec
typeof 16676760.0 Ops/sec
in 16662315.0 Ops/sec
hasOwnProperty 15032929.0 Ops/sec
bool 16812672.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool