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: Character, Code Unit, Code Point]

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

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

Note, you probably want codePointAt instead.

[see JS: String.prototype.codePointAt]

Reference

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

Character Topic

  1. JS: Character, Code Unit, 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

JS String

  1. String Overview
  2. Template String
  3. Char, Code Unit, Code Point
  4. String Escape Sequence
  5. Unicode Escape Sequence
  6. String to Number
  7. Encode URL, Escape String
  8. Format Number
  9. Source Code Encoding
  10. Allowed Characters in Identifier
  11. String Object
  12. String.prototype
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