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/66.0.3359.117 Safari/537.36
Chrome 66
Windows 7
Other
6 years ago
Test name Executions per second
undefined 2135836.0 Ops/sec
typeof 6701282.0 Ops/sec
in 6044909.5 Ops/sec
hasOwnProperty 6094804.5 Ops/sec
bool 6634565.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool