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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
Chrome 119
Windows
Desktop
2 years ago
Benchmark.js
character index
4.9M/s
substr()
4.8M/s
slice()
4.7M/s
charAt()
4.6M/s
View exact numbers
Test name Executions per second
✓ character index 4,873,676 Ops/sec
substr() 4,775,282 Ops/sec
slice() 4,677,128 Ops/sec
charAt() 4,570,956 Ops/sec
Script Preparation code:
Tests: