Run results for: string.charCodeAt(index) vs string[index].charCodeAt()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
charCodeAt(0)	31846490.0 Ops/sec
charCodeAt(300)	31957028.0 Ops/sec
[0].charCodeAt()	24080684.0 Ops/sec
[300].charCodeAt()	23939364.0 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].charCodeAt()
str[0].charCodeAt()
[300].charCodeAt()
str[300].charCodeAt()

Run results for: string.charCodeAt(index) vs string[index].charCodeAt()

charCodeAt(0)

charCodeAt(300)

[0].charCodeAt()

[300].charCodeAt()