Switch KaTeX to MathJax

Describe your feature request

Mark Text use KaTeX to display math expressions, but KaTeX is too weak to display some complex expressions, such as \ce。

What problem does this feature solve? [optional]

Displaying some complex expressions.

Additional context [optional]

[RyanGreenup]

Most things can be done with KaTeX, according to the docs carbon bonds are supported.

The only big missing feature is equation numbering, but that’s tricky to do in markdown because the align environment shouldn’t be used inside $$ or \[ and last I checked pandoc doesn’t inteligently remove $$ where they shouldn’t be used. So if MathJax is used special attention would have to be paid to this like in RMarkDown or org-mode where \begin{align} May de limit a math environment . In order to achieve numbering and alignement in KaTeX there’s the aligned environment which doesn’t support tags or labels in LaTeX ( but confusingly supports \tags{} in KaTeX) which can be used with something like \ldots (1) in order to achieve compatibility with LaTeX through pandoc

Another thing to consider is speed and portability, Either mathjax would have to be installed locally or a consistent online connection would be required to access the CDN and even then from what I understand it does render slower.

such a switch would need to be done in a way that doesn’t slow everything down and doesn’t break pdf export.

[blsz]

Please keep KaTeX. The output looks better than MathJax and it is faster.