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npm install markdown-it-mathjax

> Markdown-it plugin to bypass LaTeX math for mathjax processing.
Processes TeX displayed math
$$1 2 3$$ => \[1 2 3\]
Processes TeX in-line math
$1 2 3$ => \(1 2 3\)
Skips in-line math if numbers are around (according to pandoc math)
$1 2 3$5 => $1 2 3$5
Also processes LaTeX delimiters (double backslashed)
\\(1 2 3\\) => \(1 2 3\)
\\[1 2 3\\] => \[1 2 3\]
And sections
\begin{abc}1 2 3\end{abc} => \begin{abc}1 2 3\end{abc}
``bash`
npm install markdown-it-mathjax --save
`js
var md = require('markdown-it')()
.use(require('markdown-it-mathjax')());
md.render('$1 2 3$') // => '
\(1 2 3\)
'_Differences in browser._ If you load script directly into the page, without
package system, module will add itself globally as
window.markdownitMathjax`.