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Run results for: char index vs charAt() vs slice() vs startsWith() vs RegExp --

Compare methods for testing string's beggining character.

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Run details:
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
Windows
Desktop
2 months ago
Test name Executions per second
character index 90344152.0 Ops/sec
charAt() 58183592.0 Ops/sec
startsWith() 73429728.0 Ops/sec
slice() 81070136.0 Ops/sec
RegExp 35128724.0 Ops/sec
Script Preparation code:
Tests:

  • character index

  • charAt()

  • startsWith()

  • slice()

  • RegExp