MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */

// MathJax typesetting in edit previews
function mathJaxTypeset($content) {
  function waitForMathJax() {
    if (typeof MathJax === 'undefined') {
      setTimeout(waitForMathJax, 1000);
      console.log('Waiting for MathJax.');
    } else {
      console.log($content);
      // delay as wikipage.content is fired before $content is added to the page
      setTimeout(MathJax.Hub.Queue(["Typeset", MathJax.Hub, "wikiPreview"]).execute, 1000);
      console.log('Found MathJax; typeset done.');
    }
  }
  waitForMathJax();
}
mw.hook('wikipage.content').add(mathJaxTypeset);