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 Check function. typeof vs constructor + null check (version: 1)

Difference between typeof(a => {}) === 'function' and (a => {}).constructor === Function

Comparing performance of: typeof vs constructor

Created: 4 years ago by: Registered User
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Script Preparation code:
Tests:

  • typeof

  • constructor

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    typeof
    constructor

    Fastest: N/A

    Slowest: N/A

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Latest run results:
Run details: (Test run date: 3 months ago)
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36
Chrome Mobile 120 on Android
View result in a separate tab
Test name Executions per second
typeof 17204460.0 Ops/sec
constructor 4326906.0 Ops/sec