instanceof vs manual checking (version: 1)

Determining if instanceof is slower than checking against a known property

Comparing performance of: base instanceof Base vs extender instanceof Base vs base instanceof Extender vs extender instanceof Extender vs objBase check property vs objExtender check property

Created: one year ago by: Guest
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Script Preparation code:
Tests:
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    base instanceof Base
    extender instanceof Base
    base instanceof Extender
    extender instanceof Extender
    objBase check property
    objExtender check property

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: one year ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Chrome 133 on Windows
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extender instanceof Extender
127.8M/s
objBase check property
123.8M/s
base instanceof Extender
118.7M/s
extender instanceof Base
115.2M/s
objExtender check property
113.9M/s
base instanceof Base
113.8M/s
View exact numbers
Test name Executions per second
✓ extender instanceof Extender 127,838,376 Ops/sec
objBase check property 123,774,040 Ops/sec
base instanceof Extender 118,679,016 Ops/sec
extender instanceof Base 115,179,872 Ops/sec
objExtender check property 113,899,272 Ops/sec
base instanceof Base 113,808,528 Ops/sec

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