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; WOW64; Trident/7.0; rv:11.0) like Gecko
IE 11
Windows
Desktop
5 years ago
Test name Executions per second
undefined 8257136.0 Ops/sec
typeof 12139813.0 Ops/sec
in 11382605.0 Ops/sec
hasOwnProperty 10508285.0 Ops/sec
bool 42642104.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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