Hexo Filter MathJax

Server side MathJax Renderer Plugin for Hexo.

WARNING: This plugin is a server-side math rendering plugin, which does not depend on any front-end scripts. If you have already enabled other math rendering methods before installing this plugin, please do the following to avoid conflicts:

• Remove all other Hexo math plugins
• Disable front-end math renderer in Hexo theme settings (For theme NexT, you need to set both math.mathjax.enable and math.katax.enable to false)
• Delete front-end scripts related to math rendering

Installation

$ npm install hexo-filter-mathjax
$ hexo clean

Options

You can configure this plugin in Hexo _config.yml. Default options:

mathjax:
  tags: none # or 'ams' or 'all'
  single_dollars: true # enable single dollar signs as in-line math delimiters
  cjk_width: 0.9 # relative CJK char width
  normal_width: 0.6 # relative normal (monospace) width
  append_css: true # add CSS to pages rendered by MathJax
  every_page: false # if true, every page will be rendered by MathJax regardless the `mathjax` setting in Front-matter
  packages: # extra packages to load
  extension_options: {}
    # you can put your extension options here
    # see http://docs.mathjax.org/en/latest/options/input/tex.html#tex-extension-options for more detail

Usage

Set mathjax: true in Front-matter of each article (post / page) that you would like to enable MathJax. For example:

---
title: On the Electrodynamics of Moving Bodies
categories: Physics
date: 1905-06-30 12:00:00
mathjax: true
---

Then you can use the LaTeX syntax in the article.

Renderer

hexo-renderer-pandoc is recommended because it can handle mathematical formulas in markdown documents perfectly. But you need to be aware that inline Math (..$...$) must not have white spaces after the opening $ and before the ending $. For example:

-$ \epsilon_0 $
+$\epsilon_0$
-$ \frac{\partial}{\partial t} $
+$\frac{\partial}{\partial t}$

If you are using other renderers, such as hexo-renderer-marked, you need to be aware of the conflict between LaTeX and Markdown syntax. For example, an underscore (_) may be interpreted as the start of italic text in Markdown, or subscripted mark in TeX. Use \ to escape if necessary:

-$\epsilon_0$
+$\epsilon\_0$
-\begin{eqnarray*}
+\begin{eqnarray\*}
-\\
+\\\\

Sample

Write the following LaTeX code:

$$
i\hbar\frac{\partial}{\partial t}\psi=-\frac{\hbar^2}{2m}\nabla^2\psi+V\psi
$$

\begin{eqnarray\*}
\nabla\cdot\vec{E}&=&\frac{\rho}{\epsilon_0}\\\\
\nabla\cdot\vec{B}&=&0\\\\
\nabla\times\vec{E}&=&-\frac{\partial B}{\partial t}\\\\
\nabla\times\vec{B}&=&\mu_0\left(\vec{J}+\epsilon_0\frac{\partial E}{\partial t}\right)\\\\
\end{eqnarray\*}

Then you will get:

Known Issues

Long equations with labels may cause horizontal overflow, because a min-width CSS property will be added to mjx-container elements by MathJax.

License

Released under the MIT License