JS: String.prototype.charAt

By Xah Lee. Date: . Last updated: .

s.charAt(pos)

Returns a string of length 1 that's the char at pos of s.

Return empty string if index is out of bound.

console.log ( "abc".charAt(1) === "b" ); // true
// if index is out of bound, return empty string
console.log ( "abc".charAt(9) === "" );
// true

Reference

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

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 Character Escape Sequence

String Topic

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  2. JS: String Code Unit vs Code Point
  3. JS: Unicode Character Escape Sequence
  4. JS: Allowed Characters in Identifier
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  6. HTML: Character Sets and Encoding
  7. HTML/XML Entity List

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  4. JS: Format Number
  5. JS: JSON Object

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  2. JS: String.prototype
  3. JS: String Constructor
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