JS: String.prototype.charCodeAt

By Xah Lee. Date: . Last updated: .

s.charCodeAt (pos)

Return the code unit of char at pos in s.

[see JS: String Code Unit vs Code Point]

If this character has Unicode code point less than 2^16, then, result is identical to s.codePointAt(pos).

// char “a” has code point 97
console.log ( "abc".charCodeAt (0) === 97 );
// true

For ES2015 onward, you should use codePointAt.

[see JS: String.prototype.codePointAt]

Reference

ECMAScript 2015 §Text Processing#sec-string.prototype.charcodeat

Character Topic

  1. JS: String Code Unit vs Code Point
  2. JS: Convert Character To/From Codepoint
  3. JS: String.fromCodePoint
  4. JS: String.fromCharCode
  5. JS: String.prototype.charAt
  6. JS: String.prototype.charCodeAt
  7. JS: String.prototype.codePointAt
  8. JS: Convert Decimal/Hexadecimal
  9. JS: Unicode Escape Sequence

String Topic

  1. JS: String Overview
  2. JS: Template String
  3. JS: String Object
  4. JS: String.prototype
  5. JS: String Code Unit vs Code Point
  6. JS: String Escape Sequence
  7. JS: Unicode Escape Sequence
  8. JS: Source Code Encoding
  9. JS: Allowed Characters in Identifier
  10. JS: Convert String to Number
  11. JS: Encode URL, Escape String
  12. JS: Format Number
  13. JS: JSON
Liket it? Put $5 at patreon.

Or, Buy JavaScript in Depth

Patreon me $5. Ask me question on patreon