Attention
Version 3 is now the current version of MathJax. This document is for version 2.
The MathJax variable¶
MathJax has a single global variable, MathJax
, in which all its
data, and the data for loaded components, are stored. The MathJax
variable is a nested structure, with its toplevel properties being
objects themselves.
Main MathJax Components¶

MathJax.Hub
Contains the MathJax hub code and variables, including the startup code, the onload handler, the browser data, and so forth.

MathJax.Ajax
Contains the code for loading external modules and creating stylesheets. Most of the code that causes MathJax to operate asynchronously is handled here.

MathJax.Message
Contains the code to handle the intermittent message window that periodically appears in the lower lefthand corner of the window.

MathJax.HTML
Contains support code for creating HTML elements dynamically from descriptions stored in JavaScript objects.

MathJax.CallBack
Contains the code for managing MathJax callbacks, queues and signals.

MathJax.Extension
Initially empty, this is where extensions can load their code. For example, the tex2jax preprocessor creates
MathJax.Extension.tex2jax
for its code and variables.

MathJax.Menu
Initially null, this is where the MathJax contextual menu is stored, when
extensions/MathMenu.js
is loaded.

MathJax.Object
Contains the code for the MathJax objectoriented programming model.

MathJax.InputJax
The base class for all input jax objects. Subclasses for specific input jax are created as subobjects of
MathJax.InputJax
. For example, the TeX input jax loads itself asMathJax.InputJax.TeX
.

MathJax.OutputJax
The base class for all output jax objects. Subclasses for specific output jax are created as subobjects of
MathJax.OutputJax
. For example, the HTMLCSS output jax loads itself asMathJax.OutputJax["HTMLCSS"]
.

MathJax.ElementJax
The base class for all element jax objects. Subclasses for specific element jax are created as subobjects of
MathJax.ElementJax
. For example, the mml element jax loads itself asMathJax.ElementJax.mml
.
Properties¶

MathJax.version
The version number of the MathJax library as a whole.

MathJax.fileversion
The version number of the
MathJax.js
file specifically.

MathJax.isReady
This is set to
true
when MathJax is set up and ready to perform typesetting actions (and isnull
otherwise).