Fast math support for markdown-it with KaTeX, support external link
This plugin is fork from markdown-it-katex
and support external katex.
Add Math to your Markdown
KaTeX is a faster alternative to MathJax. This plugin makes it easy to support in your markdown.
Need convincing?
* Check out the comparative benchmark: KaTeX vs MathJax
* Try it in your browser: markdown-it-katex-external demo
npm install markdown-it
Install the plugin
npm install markdown-it-katex-external
Use it in your javascript
javascript
var md = require('markdown-it')(),
mk = require('markdown-it-katex-external');md.use(mk);
// double backslash is required for javascript strings, but not html input
var result = md.render('# Math Rulez! \n $\\sqrt{3x-1}+(1+x)^2$');
`Include the KaTeX stylesheet in your html:
html
`If you're using the default markdown-it parser, I also recommend the github stylesheet:
html
` options can be supplied with the second argument to use.
`javascript
md.use(mk, {"throwOnError" : false, "errorColor" : " #cc0000"});
`Examples
$3
Surround your LaTeX with a single on each side for inline rendering.
`
$\sqrt{3x-1}+(1+x)^2$
$3
Use two () for block rendering. This mode uses bigger symbols and centers
the result.`
$$\begin{array}{c}\nabla \times \vec{\mathbf{B}} -\, \frac1c\, \frac{\partial\vec{\mathbf{E}}}{\partial t} &
= \frac{4\pi}{c}\vec{\mathbf{j}} \nabla \cdot \vec{\mathbf{E}} & = 4 \pi \rho \\
\nabla \times \vec{\mathbf{E}}\, +\, \frac1c\, \frac{\partial\vec{\mathbf{B}}}{\partial t} & = \vec{\mathbf{0}} \\
\nabla \cdot \vec{\mathbf{B}} & = 0
\end{array}$$
Math parsing in markdown is designed to agree with the conventions set by pandoc:
Anything between two $ characters will be treated as TeX math. The opening $ must
have a non-space character immediately to its right, while the closing $ must
have a non-space character immediately to its left, and must not be followed
immediately by a digit. Thus, $20,000 and $30,000 won’t parse as math. If for some
reason you need to enclose text in literal $ characters, backslash-escape them and
they won’t be treated as math delimiters.
KaTeX is based on TeX and LaTeX. Support for both is growing. Here's a list of
currently supported functions: