Question

I am using MathJax 1.1 in my web site. I need to place some html before and after every math encountered by the processor (tex2jax in my case).

How can I do this?

• Should I register a callback?

• Should I use some options in configuration?

Answer 1

This issue was discussed on the MathJax user’s forum. You could try something like

<script type="text/x-mathjax-config">
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
  var TEX = MathJax.InputJax.TeX;
  var PREFILTER = TEX.prefilterMath;
  TEX.Augment({
    prefilterMath: function (math,displaymode,script) {
      math = "\\displaystyle{"+math+"}";
      return PREFILTER.call(TEX,math,displaymode,script);
    }
  });
});
</script>

to add \displastyle{ before and } after the mathematics. You should put this script before the script that loads MathJax.js.