This file demonstrates a configuration that locates <script> tags
like the ones used in MathJax v2 to mark the mathematics within the page.
This example shows how to process a complete HTML page containing MathJax
version 2 styled <script> tags (that store the math
content in the page). In version 2, these tags are generated automatically
by the tex2jax or other pre-processors, but they could also be
created by other software that generates the page so as to avoid the need
for the pre-processing step, and the need for quoting HTML special
characters like less-than signs and ampersands.
MathJax version 4 does not look for such <script> tags
itself, but you can implement it yourself, as in this example.
The key lines are in the renderAction in the MathJax
configuration, as described in the comments there. The
renderAction replaces the usual page-search action (the
find action at priority 10) with one that searches for
<script> tags with type="math/tex" (or
type="math/tex; mode=display"), and creates the needed
MathItem instances for them. The <script>
tags are replaced by empty text nodes, and the math items refers to these
for their starting and ending locations.