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/87.0.4280.88 Safari/537.36
Chrome 87
Windows
Desktop
3 years ago
Test name Executions per second
undefined 3852075.2 Ops/sec
typeof 10473153.0 Ops/sec
in 10537297.0 Ops/sec
hasOwnProperty 9762382.0 Ops/sec
truthy 10532458.0 Ops/sec
local undef 5323352.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • truthy

  • local undef

;