MeasureThat.net

Run results for: char index vs charAt() vs slice() vs substr()

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/132.0.0.0 Safari/537.36
Chrome 132
Mac OS X 10.15.7
Desktop
2 months ago
Test name Executions per second
character index 89506520.0 Ops/sec
charAt() 95242648.0 Ops/sec
slice() 85805160.0 Ops/sec
substr() 87851072.0 Ops/sec
Script Preparation code:
Tests:

  • character index

  • charAt()

  • slice()

  • substr()