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MathJax for All

Uses MathJax to properly display LaTeX code, on any site

  1. // ==UserScript==
  2. // @name       MathJax for All
  3. // @version    0.4
  4. // @description Uses MathJax to properly display LaTeX code, on any site
  5. // @namespace 1993.uk
  6. // @match https://mail.google.com/*
  7. // @match file:///*
  8. // ==/UserScript==
  9. if (window.MathJax === undefined) {
  10.     var mjscr = document.createElement("script");
  11.     mjscr.type = "text/javascript";
  12.     mjscr.src = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js";
  13.     mjscr.text = 'MathJax.Hub.Config({extensions:["tex2jax.js"],'+"tex2jax:{inlineMath:[['$','$']]"
  14.         +',skipTags:["script","noscript","pre","code"]},jax:["input/TeX","output/CommonHTML"],'
  15.         +'TeX:{extensions:["autoload-all.js","noUndefined.js"]}'
  16.         +'});MathJax.Hub.Startup.onload();';
  17.     document.getElementsByTagName("head")[0].appendChild(mjscr);
  18.  
  19.     (new MutationObserver(function(mutationsList, observer) {
  20.         let el = [];
  21.         for (const mutation of mutationsList) {
  22.             const node = mutation.addedNodes.item(0);
  23.             if (node === null || node.nodeType !== 1 || node.className == "MathJax_Preview" || node.id.substring(0,7) == "MathJax" || node.className.substring(0,4) == "mjx-" || node.isContentEditable) break;
  24.             if (node.offsetParent !== null && node.innerText != "") el.push(node);
  25.         }
  26.         if (el.length != 0) MathJax.Hub.Queue(["Typeset", MathJax.Hub,el,{}]);
  27.     })).observe(document,{subtree: true, childList: true});
  28. }