Overview

I've been using Latex Render for my Wordpress blog, but want to try MathJax (javascript math rendering). This is a replacement for the latex.php engine.

Problem: switching to MathJax breaks RSS and email!

Solution:

• Keep wp-latexrender as normal. All content between [tex]...[/tex] is converted to an image, RSS and email friendly.
• Tag generated images with a class ('tex'). The "alt" attribute is the original Latex.

In your blog, after the content is rendered:

• Convert the images back into MathJax with javascript:

    $('.tex').each(function(){ $(this).replaceWith('$$' + ($(this).attr('alt')) + '$$'); });

• Manually run MathJax to convert the images back into its format [fits better, font scaling, etc.]

Bonus!

• You can use $$ ... $$ (my preferred mathjax settings) for displayed equations, no need for [tex]...[/tex]
• You can use %% ... %% (my settings) for inline equations. Currently, inline is "converted" to HTML. So simple things like exponents become "sup" tags, \sqrt becomes the html entity, etc. These are wrapped in a

    <span class="tex-inline" alt="(original formula)">...my HTML conversion... </span>

and you can convert this to real inline MathJax with:

$('.tex-inline').each(function(){ $(this).text('%%' + ($(this).attr('alt')) + '%%'); });