MeasureThat.net

Run results for: undefined vs. typeof vs. in vs. hasOwnProperty

Object lookup performance

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Mac OS X 10.15
Desktop
11 months ago
Test name Executions per second
undefined 565931264.0 Ops/sec
typeof 507882528.0 Ops/sec
in 523995424.0 Ops/sec
hasOwnProperty 645006016.0 Ops/sec
bool 519812928.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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