KaTeX不渲染

时间：2018-10-15 08:46:20

标签： javascript html katex

我问这个问题几乎是愚蠢的，但是即使是最小的例子，我也无法让KaTeX进行工作：

<!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中运行它，我会得到：

enter image description here

此错误也出现在浏览器的控制台中：

enter image description here

我不明白。 CDN是否损坏？

2 个答案:

答案 0 :(得分：3)

即使这个问题需要更多的解释，我想您所需要的还是以数学渲染的方式显示公式，对吗？对于我们其他以前从未看过KaTex插件的人。无论如何，您的代码会发生什么，就是您在段落元素中添加了一些文本，因此可以正常显示在您的网页上，例如：

$ x ^ 2 = \ sqrt {y} $

第二行也显示在firefox中，因为它仅位于P元素内，并且由于脚本不起作用，因此仅显示了这两段并显示了控制台错误。

通读此插件，我认为没有诸如renderMathInElement之类的方法，或者至少我没有看到它，但是从我在以下示例中看到的

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

您可以看到通常人们使用katex.function，因此，如果将其用作脚本：

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

然后您会确定要实现的目标，所以以下是完整的代码段，希望对您有所帮助：

<!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>

答案 1 :(得分：2)

要自动渲染方程式而不必添加任何其他JavaScript代码，必须在$ \(和\)中将内联数学而不是美元符号包装起来，因为美元符号在普通文本中太常见了。因此，请改用此：

<!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>
  </body>
</html>

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