2025-2-26-fixed

themes/next/layout/_third-party/math/index.swig

@@ -0,0 +1,20 @@
+{%- if theme.math.mathjax.enable or theme.math.katex.enable %}
+  {%- set is_index_has_math = false %}
+
+  {# At home, check if there has `mathjax: true` post #}
+  {%- if is_home() and theme.math.per_page %}
+    {%- for post in page.posts.toArray() %}
+      {%- if post.mathjax and not is_index_has_math %}
+        {%- set is_index_has_math = true %}
+      {%- endif %}
+    {%- endfor %}
+  {%- endif %}
+
+  {%- if not theme.math.per_page or is_index_has_math or page.mathjax %}
+    {%- if theme.math.mathjax.enable %}
+      {% include '_third-party/math/mathjax.swig' %}
+    {% elif theme.math.katex.enable %}
+      {% include '_third-party/math/katex.swig' %}
+    {%- endif %}
+  {%- endif %}
+{%- endif %}

themes/next/layout/_third-party/math/katex.swig

@@ -0,0 +1,8 @@
+{%- set katex_uri = theme.vendors.katex or '//cdn.jsdelivr.net/npm/katex@0/dist/katex.min.css' %}
+<link rel="stylesheet" href="{{ katex_uri }}">
+{%- if theme.math.katex.copy_tex %}
+  {%- set copy_tex_js_uri = theme.vendors.copy_tex_js or '//cdn.jsdelivr.net/npm/katex@0/dist/contrib/copy-tex.min.js' %}
+  {%- set copy_tex_css_uri = theme.vendors.copy_tex_css or '//cdn.jsdelivr.net/npm/katex@0/dist/contrib/copy-tex.min.css' %}
+  <script src="{{ copy_tex_js_uri }}"></script>
+  <link rel="stylesheet" href="{{ copy_tex_css_uri }}">
+{%- endif %}

themes/next/layout/_third-party/math/mathjax.swig

@@ -0,0 +1,57 @@
+{%- set mathjax_uri = theme.vendors.mathjax or '//cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js' %}
+
+<script>
+  if (typeof MathJax === 'undefined') {
+    window.MathJax = {
+      loader: {
+        {%- if theme.math.mathjax.mhchem %}
+          load: ['[tex]/mhchem'],
+        {%- endif %}
+        source: {
+          '[tex]/amsCd': '[tex]/amscd',
+          '[tex]/AMScd': '[tex]/amscd'
+        }
+      },
+      tex: {
+        inlineMath: {'[+]': [['$', '$']]},
+        {%- if theme.math.mathjax.mhchem %}
+          packages: {'[+]': ['mhchem']},
+        {%- endif %}
+        tags: 'ams'
+      },
+      options: {
+        renderActions: {
+          findScript: [10, doc => {
+            document.querySelectorAll('script[type^="math/tex"]').forEach(node => {
+              const display = !!node.type.match(/; *mode=display/);
+              const math = new doc.options.MathItem(node.textContent, doc.inputJax[0], display);
+              const text = document.createTextNode('');
+              node.parentNode.replaceChild(text, node);
+              math.start = {node: text, delim: '', n: 0};
+              math.end = {node: text, delim: '', n: 0};
+              doc.math.push(math);
+            });
+          }, '', false],
+          insertedScript: [200, () => {
+            document.querySelectorAll('mjx-container').forEach(node => {
+              let target = node.parentNode;
+              if (target.nodeName.toLowerCase() === 'li') {
+                target.parentNode.classList.add('has-jax');
+              }
+            });
+          }, '', false]
+        }
+      }
+    };
+    (function () {
+      var script = document.createElement('script');
+      script.src = '{{ mathjax_uri }}';
+      script.defer = true;
+      document.head.appendChild(script);
+    })();
+  } else {
+    MathJax.startup.document.state(0);
+    MathJax.texReset();
+    MathJax.typeset();
+  }
+</script>