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解决Halo页面无法渲染MathBlock的问题
https://bbs.halo.run/d/866-mathjax%E5%85%AC%E5%BC%8F%E8%A7%A3%E6%9E%90%E9%97%AE%E9%A2%98
https://www.bookstack.cn/read/Halo/d96a639517b17403.md#ghqiqn

管理后台 -> 设置 -> 代码注入 -> 内容页head标签
写入
<#if settings.post_mathjax!false>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
showProcessingMessages: false,
messageStyle: "none",
extensions: ["tex2jax.js"],
jax: ["input/TeX", "output/HTML-CSS"],
tex2jax: {
inlineMath: [ ['$','$'], ["\\(","\\)"] ],
displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
skipTags: ['script', 'noscript', 'style', 'textarea', 'pre','code','a'],
ignoreClass:"comment-content"
},
"HTML-CSS": {
availableFonts: ["STIX","TeX"],
showMathMenu: false
}
});
MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
</script>
<script src="//cdnjs.loli.net/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
</#if>
这样就可以使用MathBlock块了
$$
x = {-b \pm \sqrt{b^2-4ac} \over 2a}.
$$
$$
x = {-b \pm \sqrt{b^2-4ac} \over 2a}.
$$