Computing Codes
| Character | J | j | ȷ | |||
|---|---|---|---|---|---|---|
| character name | LATIN CAPITAL LETTER J | LATIN SMALL LETTER J | LATIN SMALL LETTER DOTLESS J | |||
| encodings | decimal | hex | decimal | hex | decimal | hex |
| Unicode | 74 | 004A | 106 | 006A | 567 | 0237 |
| UTF-8 | 74 | 4A | 106 | 6A | 200 183 | C8 B7 |
| Numeric character reference | J | J | j | j | ȷ | ȷ |
| EBCDIC family | 209 | D1 | 145 | 91 | ||
| ASCII 1 | 74 | 4A | 106 | 6A | ||
1 and all encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings.
Unicode also has a dotless variant, ȷ (U+0237) for use with combining diacritics.
In Unicode, a duplicate of J for use as a special phonetic character in historical Greek linguistics is encoded in the Greek script block as ϳ (Unicode U+03F3). It is used to denote the palatal glide /j/ in the context of Greek script. It is called "Yot" in the Unicode standard, after the German name of the letter J. An uppercase version of this letter is scheduled to appear in future versions of the standard, as U+037F.
In the Wingdings font, the letter "J" is rendered as a smiley face (note this is distinct from the Unicode code point U+263A, which renders as ☺). When attempting to use the Wingdings "J" to produce the smiley in an HTML e-mail, the recipient may not see the intended formatting because HTML e-mail may be unsupported by the recipient's e-mail platform or otherwise disabled. This leads to the appearance of seemingly out-of-place "J"s, leading some to facetiously use an unformatted "J" as a stand-in for a smiley.
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—Ralph Waldo Emerson (1803–1882)