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Run results for: Test 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/88.0.4324.192 Safari/537.36
Chrome 88
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
character index 5902304.0 Ops/sec
charAt() 5876036.0 Ops/sec
startsWith() 5912496.0 Ops/sec
slice() 5471130.0 Ops/sec
RegExp 4779868.0 Ops/sec
Script Preparation code:
Tests:

  • character index

  • charAt()

  • startsWith()

  • slice()

  • RegExp