MeasureThat.net

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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Chrome 133
Mac OS X 10.15.7
Desktop
one month ago
Test name Executions per second
character index 184282848.0 Ops/sec
charAt() 193973232.0 Ops/sec
startsWith() 192369584.0 Ops/sec
slice() 148721472.0 Ops/sec
RegExp 79027360.0 Ops/sec
Script Preparation code:
Tests:

  • character index

  • charAt()

  • startsWith()

  • slice()

  • RegExp