根据文档，您应该首先这样安装KaTeX:

According to docs, you should first install KaTeX like this:

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/katex.min.js"></script>

，然后安装自动渲染扩展程序，大概是这样的:

and then install the Auto-render extension, presumably like this:

<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.5.1/contrib/auto-render.min.js"></script>

并添加

<script>renderMathInElement(document.body);</script>

到body元素的末尾.在我所参考的页面上查看详细信息(看起来您将需要像这样设置分度符:

to the end of the body element. See details on the page I've referenced (looks like you will need to set delimeters like this:

<script>renderMathInElement(document.body,{delimiters:
  [{left: "$", right: "$", display: false}]
});</script>