Script Preparation code:
Tests:
  • Check via direct property lookup

  • Check via in

  • Check via typeof

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    Check via direct property lookup
    Check via in
    Check via typeof

    Fastest: N/A

    Slowest: N/A

Get performance results from real users on your website with Request Metrics.
Latest run results:
Run details: (Test run date: 2 years ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36
Chrome 93 on Windows
View result in a separate tab
Test name Executions per second
Check via direct property lookup 155744.7 Ops/sec
Check via in 151029.0 Ops/sec
Check via typeof 150876.5 Ops/sec