KaTeX 不渲染

Question

我觉得问这个几乎是愚蠢的，但我无法让 KaTeX 处理即使是最简单的例子：

<!DOCTYPE html>
<!-- KaTeX requires the use of the HTML5 doctype. Without it, KaTeX may not render properly -->
<html>
  <head>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.css" integrity="sha384-D+9gmBxUQogRLqvARvNLmA9hS2x//eK1FhVb9PiU86gmcrBrJAQT8okdJ4LMp2uv" crossorigin="anonymous">

    <!-- The loading of KaTeX is deferred to speed up page rendering -->
    <script src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.js" integrity="sha384-483A6DwYfKeDa0Q52fJmxFXkcPCFfnXMoXblOkJ4JcA8zATN6Tm78UNL72AKk+0O" crossorigin="anonymous"></script>

    <!-- To automatically render math in text elements, include the auto-render extension: -->
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/contrib/auto-render.min.js" integrity="sha384-yACMu8JWxKzSp/C1YV86pzGiQ/l1YUfE8oPuahJQxzehAjEt2GiQuy/BIvl9KyeF" crossorigin="anonymous"
        onload="renderMathInElement(document.body);"></script>
  </head>
  <body>
      <p>$x^2 = \sqrt{y}$</p>
      <p id="1">Foo $x^2 = \sqrt{y}$  </p>
      <script>renderMathInElement(document.getElementById('1'))</script>

  </body>
</html>

如果我在 Firefox 中运行这个，我得到这个：

此错误也出现在浏览器的控制台中：

我不明白。 cdn坏了？

Answer 1

虽然这个问题需要更多的解释，但我猜你需要的是以数学呈现的方式显示公式，对吗？仅供我们这些以前没有见过 KaTex 插件的人使用。无论如何，您的代码发生的事情是您将段落元素与一些文本放在一起，这样它就会正常呈现到您的网页，例如：

$x^2 = \sqrt{y}$

第二行也出现在您的 firefox 中，因为它就在 P 元素内，并且由于您的脚本不工作，它只显示那两段并显示控制台错误。

通读这个插件，我认为没有renderMathInElement之类的方法，或者至少我没有看到，但是从我看到的例子来看：

https://github.com/Khan/KaTeX/

你可以看到通常人们使用 katex.function，所以如果你使用这个作为你的脚本：

katex.render("YOUR FORMULAS HERE", elementById, {
            throwOnError: false
        });

然后你就会对你想要实现的目标感到满意，所以这是完整的片段，希望对你有所帮助：

<!DOCTYPE html>
<!-- KaTeX requires the use of the HTML5 doctype. Without it, KaTeX may not render properly -->
<html>
    <head>
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.css" integrity="sha384-D+9gmBxUQogRLqvARvNLmA9hS2x//eK1FhVb9PiU86gmcrBrJAQT8okdJ4LMp2uv" crossorigin="anonymous">

        <!-- The loading of KaTeX is deferred to speed up page rendering -->
        <script src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.js" integrity="sha384-483A6DwYfKeDa0Q52fJmxFXkcPCFfnXMoXblOkJ4JcA8zATN6Tm78UNL72AKk+0O" crossorigin="anonymous"></script>

        <!-- To automatically render math in text elements, include the auto-render extension: -->
        <script defer src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/contrib/auto-render.min.js" integrity="sha384-yACMu8JWxKzSp/C1YV86pzGiQ/l1YUfE8oPuahJQxzehAjEt2GiQuy/BIvl9KyeF" crossorigin="anonymous"
        onload="renderMathInElement(document.body);"></script>
    </head>
    <body>

        <p id="IdentificatorForElement"></p>

        <script>
            katex.render("f(x)^2  = \sqrt{y}", document.getElementById('IdentificatorForElement'), {
                throwOnError: false
            });
        </script>
    </body>
</html>

Answer 2

要自动呈现方程而无需添加任何更多 JavaScript 代码，您必须将内联数学包装在 $ 和 $ 中而不是美元符号中，因为美元符号太常见于普通文本。所以，改用这个：

<!DOCTYPE html>
<!-- KaTeX requires the use of the HTML5 doctype. Without it, KaTeX may not render properly -->
<html>
  <head>
    <meta charset="UTF-8">
    
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.css" integrity="sha384-D+9gmBxUQogRLqvARvNLmA9hS2x//eK1FhVb9PiU86gmcrBrJAQT8okdJ4LMp2uv" crossorigin="anonymous">

    <!-- The loading of KaTeX is deferred to speed up page rendering -->
    <script src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/katex.min.js" integrity="sha384-483A6DwYfKeDa0Q52fJmxFXkcPCFfnXMoXblOkJ4JcA8zATN6Tm78UNL72AKk+0O" crossorigin="anonymous"></script>

    <!-- To automatically render math in text elements, include the auto-render extension: -->
    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.10.0-rc.1/dist/contrib/auto-render.min.js" integrity="sha384-yACMu8JWxKzSp/C1YV86pzGiQ/l1YUfE8oPuahJQxzehAjEt2GiQuy/BIvl9KyeF" crossorigin="anonymous"
        onload="renderMathInElement(document.body);"></script>
  </head>
  <body>
      <p>\(x^2 = \sqrt{y}\)</p>
  </body>
</html>

KaTeX 不渲染

KaTeX does not render

html

javascript

katex