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; rv:76.0) Gecko/20100101 Firefox/76.0
Firefox 76
Windows 7
Desktop
4 years ago
Test name Executions per second
undefined 75067448.0 Ops/sec
typeof 192361248.0 Ops/sec
in 134588464.0 Ops/sec
hasOwnProperty 107135336.0 Ops/sec
bool 191609008.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool