Javascript string.endsWith vs string.slice and triple equal checking vs hardcoded index and triple equal, comparing a single character (version: 1)

Comparing performance of: endWith vs slice vs hardcoded index

Created: one year ago by: Guest
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Script Preparation code:
Tests:

Historical Performance Data aggregated from 11 community runs

Desktop Results:
Chrome 11 runs
hardcoded index
157.1M/s
endWith
155.7M/s
slice
127.0M/s

Fastest: hardcoded index (1.2x faster)

View exact numbers
  • ✓ hardcoded index: 157,135,344 ops/sec
  • • endWith: 155,728,864 ops/sec
  • • slice: 126,989,776 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
    endWith
    slice
    hardcoded index

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: one year ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.15
Safari 18 on Mac OS X 10.15.7
View result in a separate tab
hardcoded index
415.2M/s
slice
335.0M/s
endWith
66.8M/s
View exact numbers
Test name Executions per second
✓ hardcoded index 415,152,960 Ops/sec
slice 334,994,592 Ops/sec
endWith 66,832,708 Ops/sec

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