Run results for: charCodeAt vs []

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

charCodeAt(0)

17.8M/s

[0]

17.8M/s

charCodeAt(300)

17.8M/s

[10]

17.7M/s

View exact numbers

Test name	Executions per second
✓ charCodeAt(0)	17,786,758 Ops/sec
[0]	17,782,194 Ops/sec
charCodeAt(300)	17,777,786 Ops/sec
[10]	17,730,728 Ops/sec

Script Preparation code:

var str = "some string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string heresome string here"

Tests:

charCodeAt(0)
str.charCodeAt(0)
charCodeAt(300)
str.charCodeAt(300)
[0]
str[0]
[10]
str[300]