MeasureThat.net

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

Compare methods for testing string's beginning character.

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36
Chrome 88
Mac OS X 11.1.0
Desktop
3 years ago
Test name Executions per second
character index 7641653.5 Ops/sec
charAt() 7725379.0 Ops/sec
startsWith() 7706639.0 Ops/sec
slice() 7294264.0 Ops/sec
Script Preparation code:
Tests:

  • character index

  • charAt()

  • startsWith()

  • slice()