MeasureThat.net

Run results for: Check object. typeof vs constructor

Difference between typeof(a => {}) === 'object' and (a => {}).constructor === Object

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15
Safari 18
Mac OS X 10.15.7
Desktop
17 days ago
Test name Executions per second
typeof 203712656.0 Ops/sec
constructor 375739904.0 Ops/sec
Script Preparation code:
Tests:

  • typeof

  • constructor