\it - LaTeX font command

x \it y

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: Full	XeTeX: Full
`textmacros`	MathJax: Full	KaTeX: Full	XeTeX: Full

Syntax#

\it

Takes no arguments. Same argspec in base and textmacros. Reading argspecs

base

{x \it y} z

textmacros

\text{\it x}

Package	Signature	Allowed mode	Notes
`base`		math	Legacy math-mode declaration for switching subsequent symbols in the current group to math italic.
`textmacros`		text	Legacy declaration that switches following text to italic styling until the current group ends.

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

\mathit{#1}approximate
Prefix command alternative for math mode
\textit{...}approximate
\textit is a command with arguments, whereas \it is declarative.
{\itshape ...}exact

`base`
Input	Case	MathJax	KaTeX	XeTeX
`{\it a}`	Positive · baseline	Pass	Pass	Pass

`textmacros`
Input	Case	MathJax	KaTeX	XeTeX
`{\it a}`	Positive · baseline	Pass	Pass	Pass