Cyrillic Capital Letter Short I HTML entity &Jcy;

&Jcy; is the HTML entity for Cyrillic Capital Letter Short I Й (U+0419). Copy Й, Й and the CSS, JavaScript, Python and URL escapes.

Entity: &Jcy;
Code point: U+0419
Unicode name: CYRILLIC CAPITAL LETTER SHORT I
Block: Cyrillic
Category: Uppercase letter (Lu)
Since: Unicode 1.1
Defined in: HTML5

Codes to copy

HTML named	`&Jcy;`Works in HTML; in XML only & < > " ' are predefined.
HTML decimal	`Й`Works in HTML and XML.
HTML hex	`Й`Works in HTML and XML.
CSS	`content: "\419";`In a stylesheet, for ::before and ::after.
JavaScript	`"\u0419"`Also valid in JSON.
Python	`"\u0419"`Python 3 string literal.
Python by name	`"\N{CYRILLIC CAPITAL LETTER SHORT I}"`Readable alternative using the Unicode name.
URL	`%D0%99`Percent-encoded UTF-8 bytes, for a path or query value.
UTF-8 bytes	`D0 99`2 bytes.
UTF-16	`0419`1 code unit, which is what JavaScript length counts.

When to use it

&Jcy; writes U+0419 (Cyrillic Capital Letter Short I), a capital letter from the Unicode Cyrillic block, encoded since Unicode 1.1. For Cyrillic text, type the letters directly on a UTF-8 page; named references for every letter make long text unreadable in source.

The name comes from the HTML5 list (much of it shared with MathML), so it works in every current browser but not in XML or XHTML served as XML, where the numeric reference is the safe choice.

More cyrillic letters

All cyrillic letters · Every HTML entity · Encode or decode text

Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).