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

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 month ago

Test name	Executions per second
charCodeAt(300)	8480823.0 Ops/sec
[0].charCodeAt()	8356395.0 Ops/sec
[300].charCodeAt()	8086396.0 Ops/sec
+[0]	8344734.0 Ops/sec
+[300]	8421745.0 Ops/sec

Script Preparation code:

var str = "012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"

Tests:

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

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

charCodeAt(300)

[0].charCodeAt()

[300].charCodeAt()

+[0]

+[300]