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

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: 5 months ago

Test name	Executions per second
charCodeAt(300)	31931446.0 Ops/sec
[0].charCodeAt()	24297566.0 Ops/sec
[300].charCodeAt()	24292598.0 Ops/sec
+[0]	31222232.0 Ops/sec
+[300]	31369936.0 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]