add MathJax

2 files changed, 37 insertions, 0 deletions

diff --git a/layouts/partials/js.html b/layouts/partials/js.html
index 46225b5..283efdb 100644
--- a/layouts/partials/js.html
+++ b/layouts/partials/js.html
@@ -5,3 +5,7 @@
 <script src="{{ "/js/fancybox.min.js" | relURL }}"></script>
 
 <script>hljs.initHighlightingOnLoad()</script>
+
+{{ if .Site.Params.mathjax }}
+  {{ partial "mathjax.html" . }}
+{{ end }}
diff --git a/layouts/partials/mathjax.html b/layouts/partials/mathjax.html
new file mode 100644
index 0000000..a8c59ab
--- /dev/null
+++ b/layouts/partials/mathjax.html
@@ -0,0 +1,33 @@
+<script type="text/javascript" async src="https://cdn.bootcss.com/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+MathJax.Hub.Config({
+  tex2jax: {
+    inlineMath: [['$','$'], ['\\(','\\)']],
+    displayMath: [['$$','$$'], ['\[\[','\]\]']],
+    processEscapes: true,
+    processEnvironments: true,
+    skipTags: ['script', 'noscript', 'style', 'textarea', 'pre'],
+    TeX: { equationNumbers: { autoNumber: "AMS" },
+         extensions: ["AMSmath.js", "AMSsymbols.js"] }
+  }
+});
+
+MathJax.Hub.Queue(function() {
+    // Fix <code> tags after MathJax finishes running. This is a
+    // hack to overcome a shortcoming of Markdown. Discussion at
+    // https://github.com/mojombo/jekyll/issues/199
+    var all = MathJax.Hub.getAllJax(), i;
+    for(i = 0; i < all.length; i += 1) {
+        all[i].SourceElement().parentNode.className += ' has-jax';
+    }
+});
+</script>
+
+<style>
+code.has-jax {
+    font: inherit;
+    font-size: 100%;
+    background: inherit;
+    border: inherit;
+    color: #515151;
+}
+</style>
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