[tex4ht] on eqnarray in mathjax mode

Mon Dec 10 01:14:49 CET 2018

Hello;

eqnarray does not work in mathjax mode.

I do not use eqnarray myself explicitly any more, but
this is from old latex files and noticed it does not work in mathjax:

=======================================
\documentclass[12pt]{article}

%test for eqnarray in mathjax
%\usepackage{amsmath}%not needed for eqnarray

\begin{document}

\begin{eqnarray*}
   \rightarrow\sum F&=& M x''   \\
   F \left( t \right)  + k R \theta + b R \theta' + H &=& M x''
\end{eqnarray*}

\end{document}
========================================

Compiled with

make4ht foo.tex "htm,mathjax"

The generated image in png for some reason, and not mathjax rendered.

=============================
</head><body >
    <div class="eqnarray">
    <center class="math-display" >
<img src="fo0x.png"
alt="  &#x2211;             &#x2032;&#x2032;
        &#x2192;     F   =   M x
F \lef t(t\right) + kR &#x03B8; + bR &#x03B8;&#x2032; + H  =   M x&#x2032;&#x2032;
" class="math-display"  /></center>
</div>
=========================

It looks like this

https://www.12000.org/tmp/1292018/screen_shot.png

The question is, is eqnarray supposed to work in mathjax?
googling around I see examples where it works in mathjax on
the net.

Thank you,
--Nasser