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Extension: forloop for the MathJax third party repository

A version of everymath.js for the MathJax third party extension repository, including a compressed version (using YUI, see the MathJax-dev tools).

About forloop

Implements simple for-loop iteration for MathJax, with special handling for arrays.

Usage:

\forloop[step]{start}{stop}{counter}{code}
\ForArray[step]{start}{stop}{counter}{code}

The \forloop macro does not work well with array environments, because the & and \\ special sequences do not work correctly in the LaTeX code block. For that reason, the \ForArray macro is provided -- it formats the table based on the loop and constructs its own internal mtable for the MathJax internal representation directly, with default spacing and styling.

Loops can be nested if needed. The \ForArray macro should not be nested to a depth more than 2 -- in this case, the inner loop adds entries to rows of the array, and the outer loop adds the rows to the array.

If you want delimiters (such as square brackets or parentheses) around an array built with \ForArray, these will need to be added explicitly in the surrounding LaTeX code.

This extension requires (and loads automatically) the counters extension, also available in this repository. If you use a local copy of this extension, you will need to decide also whether to use a local copy of the counters extension, and if so, change the URL in the Require() method call at the beginning of this extension script.

Provides \everymath macro to place tokens at beginning of all math environments.

References:

Using the MathJax CDN {#CDN}

The MathJax CDN hosts a copy of this extension via the MathJax third party extension repository. To use the CDN copy, you need MathJax v2.4 (or higher) and configure the third party extension repository as described in the MathJax documentation.

Then add the extension to your configuration like any other third party extension from the MathJax CDN. For example, your inline configuration might be

 <script type="text/x-mathjax-config>
 MathJax.Hub.Config({
   extensions: ["tex2jax.js","[Contrib]/forloop.js"],
   jax: ["input/TeX","output/HTML-CSS"],
   tex2jax: {inlineMath: [["$","$"],["\\(","\\)"]]},
   TeX: {extensions: ["AMSmath.js","AMSsymbols.js"]}
 });
 </script>