Run results for: slice vs substring vs [] vs charAt vs charCodeAt

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

charCodeAt

171.9M/s

[]

159.3M/s

substring

158.2M/s

charAt

149.3M/s

slice

128.2M/s

View exact numbers

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const string = 'some code'

Tests:

slice
string.slice(0,1) === 'so'
substring
string.substring(0,1) == 'so'
[]
string[0] === 's' && string[1] === 'o'
charAt
string.charAt(0) === 's' && string.charAt(1) === 'o'
charCodeAt
string.charCodeAt(0) === 115 && string.charCodeAt(1) === 111