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+/**
+ * A plugin which enables rendering of math equations inside
+ * of reveal.js slides. Essentially a thin wrapper for MathJax.
+ *
+ * @author Hakim El Hattab
+ */
+var RevealMath = window.RevealMath || (function(){
+
+ var options = Reveal.getConfig().math || {};
+ options.mathjax = options.mathjax || 'https://cdn.mathjax.org/mathjax/latest/MathJax.js';
+ options.config = options.config || 'TeX-AMS_HTML-full';
+
+ loadScript( options.mathjax + '?config=' + options.config, function() {
+
+ MathJax.Hub.Config({
+ messageStyle: 'none',
+ tex2jax: {
+ inlineMath: [['$','$'],['\\(','\\)']] ,
+ skipTags: ['script','noscript','style','textarea','pre']
+ },
+ skipStartupTypeset: true
+ });
+
+ // Typeset followed by an immediate reveal.js layout since
+ // the typesetting process could affect slide height
+ MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub ] );
+ MathJax.Hub.Queue( Reveal.layout );
+
+ // Reprocess equations in slides when they turn visible
+ Reveal.addEventListener( 'slidechanged', function( event ) {
+
+ MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, event.currentSlide ] );
+
+ } );
+
+ } );
+
+ function loadScript( url, callback ) {
+
+ var head = document.querySelector( 'head' );
+ var script = document.createElement( 'script' );
+ script.type = 'text/javascript';
+ script.src = url;
+
+ // Wrapper for callback to make sure it only fires once
+ var finish = function() {
+ if( typeof callback === 'function' ) {
+ callback.call();
+ callback = null;
+ }
+ }
+
+ script.onload = finish;
+
+ // IE
+ script.onreadystatechange = function() {
+ if ( this.readyState === 'loaded' ) {
+ finish();
+ }
+ }
+
+ // Normal browsers
+ head.appendChild( script );
+
+ }
+
+})();