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 Check object. typeof vs constructor + null check (version: 0)

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

Comparing performance of: typeof vs constructor

Created: one year ago by: Guest
Jump to the latest result
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: one year ago)
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Chrome 108 on Windows
View result in a separate tab
Test name Executions per second
typeof 12532880.0 Ops/sec
constructor 3333475.0 Ops/sec