\ref - LaTeX label command

\ref{eq1}

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: None	XeTeX: Full
`textmacros`	MathJax: Full	KaTeX: None	XeTeX: Full

Syntax#

\refm:N{\cs}control sequence

Argspec m:N — one mandatory argument. Same argspec in base and textmacros. Reading argspecs

base

\ref x

textmacros

\text{\ref{eq1}}

Package	Signature	Allowed mode	Notes
`base`	`m:N`	math	Used for cross-references to previously labeled equations or other numbered objects in mathematical expressions.
`textmacros`	`m:N`	text	Used in prose to insert the number or tag of a labeled equation, theorem, section, or similar object by label name.

TeXForm parses this entry as prefix syntax; the package determines its argument specification.

`base`
Input	Case	MathJax	KaTeX	XeTeX
`\ref{a}`	Positive · baseline	Pass	Fail	Pass
`\ref a`	Positive · bare[0]	Pass	Fail	Pass
`\ref{\alpha}`	Negative · neg:N[0]	Pass	Fail	Fail

`textmacros`
Input	Case	MathJax	KaTeX	XeTeX
`\ref{a}`	Positive · baseline	Pass	Fail	Pass
`\ref a`	Positive · bare[0]	Pass	Fail	Pass
`\ref{\alpha}`	Negative · neg:N[0]	Pass	Fail	Fail