diff --git a/examples/math.html b/examples/math.html
index 5861a71d246..d27779a09bc 100644
--- a/examples/math.html
+++ b/examples/math.html
@@ -182,8 +182,7 @@ TeX Macros
history: true,
transition: 'linear',
- math: {
- // mathjax: 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js',
+ mathjax2: {
config: 'TeX-AMS_HTML-full',
TeX: {
Macros: {
@@ -193,7 +192,13 @@ TeX Macros
}
},
- plugins: [ RevealMath ]
+ // There are three typesetters available
+ // RevealMath.MathJax2 (default)
+ // RevealMath.MathJax3
+ // RevealMath.KaTeX
+ //
+ // More info at https://revealjs.com/math/
+ plugins: [ RevealMath.MathJax2 ]
});
diff --git a/package-lock.json b/package-lock.json
index f7039d4b345..96c9835a97c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2227,9 +2227,9 @@
}
},
"node_modules/caniuse-lite": {
- "version": "1.0.30001228",
- "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001228.tgz",
- "integrity": "sha512-QQmLOGJ3DEgokHbMSA8cj2a+geXqmnpyOFT0lhQV6P3/YOJvGDEwoedcwxEQ30gJIwIIunHIicunJ2rzK5gB2A==",
+ "version": "1.0.30001272",
+ "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001272.tgz",
+ "integrity": "sha512-DV1j9Oot5dydyH1v28g25KoVm7l8MTxazwuiH3utWiAS6iL/9Nh//TGwqFEeqqN8nnWYQ8HHhUq+o4QPt9kvYw==",
"dev": true,
"funding": {
"type": "opencollective",
@@ -11296,9 +11296,9 @@
"dev": true
},
"caniuse-lite": {
- "version": "1.0.30001228",
- "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001228.tgz",
- "integrity": "sha512-QQmLOGJ3DEgokHbMSA8cj2a+geXqmnpyOFT0lhQV6P3/YOJvGDEwoedcwxEQ30gJIwIIunHIicunJ2rzK5gB2A==",
+ "version": "1.0.30001272",
+ "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001272.tgz",
+ "integrity": "sha512-DV1j9Oot5dydyH1v28g25KoVm7l8MTxazwuiH3utWiAS6iL/9Nh//TGwqFEeqqN8nnWYQ8HHhUq+o4QPt9kvYw==",
"dev": true
},
"chalk": {
diff --git a/plugin/math/katex.js b/plugin/math/katex.js
new file mode 100755
index 00000000000..29b05b7b2d0
--- /dev/null
+++ b/plugin/math/katex.js
@@ -0,0 +1,87 @@
+/**
+ * A plugin which enables rendering of math equations inside
+ * of reveal.js slides. Essentially a thin wrapper for KaTeX.
+ *
+ * @author Hakim El Hattab
+ * @author Gerhard Burger
+ */
+export const KaTeX = () => {
+ let deck;
+
+ let defaultOptions = {
+ version: 'latest',
+ delimiters: [
+ {left: '$', right: '$', display: false},
+ {left: '$$', right: '$$', display: true},
+ {left: '\\(', right: '\\)', display: false},
+ {left: '\\[', right: '\\]', display: true}
+ ],
+ ignoredTags: ['script', 'noscript', 'style', 'textarea', 'pre']
+ }
+
+ const loadCss = src => {
+ let link = document.createElement('link');
+ link.rel = 'stylesheet';
+ link.href = src;
+ document.head.appendChild(link);
+ };
+
+ /**
+ * Loads a JavaScript file and returns a Promise for when it is loaded
+ * Credits: https://aaronsmith.online/easily-load-an-external-script-using-javascript/
+ */
+ const loadScript = src => {
+ return new Promise((resolve, reject) => {
+ const script = document.createElement('script')
+ script.type = 'text/javascript'
+ script.onload = resolve
+ script.onerror = reject
+ script.src = src
+ document.head.append(script)
+ })
+ };
+
+ async function loadScripts(urls) {
+ for(const url of urls) {
+ await loadScript(url);
+ }
+ }
+
+ return {
+ id: 'katex',
+
+ init: function (reveal) {
+
+ deck = reveal;
+
+ let revealOptions = deck.getConfig().katex || {};
+
+ let options = {...defaultOptions, ...revealOptions};
+ const {local, version, extensions, ...katexOptions} = options;
+
+ let baseUrl = options.local || 'https://cdn.jsdelivr.net/npm/katex';
+ let versionString = options.local ? '' : '@' + options.version;
+
+ let cssUrl = baseUrl + versionString + '/dist/katex.min.css';
+ let katexUrl = baseUrl + versionString + '/dist/katex.min.js';
+ let mhchemUrl = baseUrl + versionString + '/dist/contrib/mhchem.min.js'
+ let karUrl = baseUrl + versionString + '/dist/contrib/auto-render.min.js';
+
+ let katexScripts = [katexUrl];
+ if(options.extensions && options.extensions.includes("mhchem")) {
+ katexScripts.push(mhchemUrl);
+ }
+ katexScripts.push(karUrl);
+
+ loadCss(cssUrl);
+
+ // For some reason dynamically loading with defer attribute doesn't result in the expected behavior, the below code does
+ loadScripts(katexScripts).then(() => {
+ renderMathInElement(document.body, katexOptions);
+ deck.layout();
+ });
+
+ }
+ }
+
+};
diff --git a/plugin/math/math.esm.js b/plugin/math/math.esm.js
index 716c1148960..90724e069af 100644
--- a/plugin/math/math.esm.js
+++ b/plugin/math/math.esm.js
@@ -1 +1 @@
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