className.replace vs classList.replace vs classList.remove/add (version: 1)

Based on the test (className vs. setAttribute vs. classList - measurethat.net/Benchmarks/Show/3108)

Comparing performance of: className replace vs classList replace vs classList remove add

Created: one year ago by: Registered User
Go to the latest result
HTML Preparation code:
Script Preparation code:
Tests:

Historical Performance Data aggregated from 8 community runs

Desktop Results:
Chrome 8 runs
className replace
1.0M/s
classList remove add
855K/s
classList replace
848K/s

Fastest: className replace (1.2x faster)

View exact numbers
  • ✓ className replace: 1,015,692 ops/sec
  • • classList remove add: 855,497 ops/sec
  • • classList replace: 848,331 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results
  • Test case name Result
    className replace
    classList replace
    classList remove add

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 11 months ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36
Chrome 139 on Windows
View result in a separate tab
className replace
247K/s
classList remove add
236K/s
classList replace
218K/s
View exact numbers
Test name Executions per second
✓ className replace 247,302 Ops/sec
classList remove add 236,426 Ops/sec
classList replace 218,429 Ops/sec

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