MathJax-demos-web

tex-macros.html

This example shows how to predefine TeX macros for use in a web page in two different ways: either using the MathJax configuration to define them, or by embedding them in a hidden math expression.

The key lines are

  <script>
  MathJax = {
    tex: {
      macros: {
        RR: '{\\bf R}',                    // a simple string replacement
        bold: ['\\boldsymbol{#1}',1] ,     // this macro has one parameter
        ddx: ['\\frac{d#2}{d#1}', 2, 'x'], // this macro has an optional parameter that defaults to 'x'
        abc: ['(#1)', 1, [null, '\\cba']]  // equivalent to \def\abc#1\cba{(#1)}
      }
    }
  };
  </script>
  <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>

for the first method, and

<div style="display:none">
\(
  \def\<#1>{\left<#1\right>}
  \newcommand{\CC}{\mathbf{C}}
\)
</div>

for the second. The comments in the first code block indicate how to interpret the arrays used to define the individual macros. The definitions in the second code block are

Run the example

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