The API in MathJax v3 and v4 differs substantially from that in v2. This file demonstrates how to simulate some of the v2 API in v4.
Testing color: \(\color{red}{x} + y\)
Testing AMScd: \(\require{AMScd} \begin{CD} A @>f>> B\end{CD}\)
Testing HTML: \(\require{HTML} \href{https://www.mathjax.org/}{\text{a link}}\)
Hub calls Failed!
This example shows how to set up MathJax version 3 to act somewhat
more like MathJax version 2. The main actions are to return the
\color macro to the non-standard version-2 behavior, and to
allow the \require macro to use the version-2 TeX extension
names. In addition, this example also defines versions of
MathJax.Hub.Queue()MathJax.Hub.Typeset()MathJax.Callback()that you may be able to use to keep custom code that uses these version 2 features working. It also defines
MathJax.Hub.Register.StartupHook()MathJax.Hub.Register.MessageHook()MathJax.Hub.Register.LoadHook()MathJax.Hub.Config()to generate error messages, and looks for
<script type="text/x-mathjax-config"> blocks, which are
no longer supported, in order to alert you to the need to convert these to
version 4 by hand. You should use the configuration
converter to help convert your version 2 configuration to a
comparable version 4 configuration.
The script in the last section of the body uses the
MathJax.Hub.Queue() to typeset the page, and then insert a
success message that verifies that the queue is working.