MeasureThat.net

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

Object lookup performance

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0
Firefox 120
Ubuntu
Desktop
11 months ago
Test name Executions per second
undefined 294378880.0 Ops/sec
typeof 979230016.0 Ops/sec
in 937476224.0 Ops/sec
hasOwnProperty 927002112.0 Ops/sec
bool 912105216.0 Ops/sec
Script Preparation code:
Tests:

  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

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