Google AMP - 数学

使用MathML，我们可以显示数学公式。在本章中，我们将看到一个如何使用 MathML 并使用几个数学公式来显示相同​​内容的工作示例。

要使用 MathML，我们需要包含以下 javascript 文件 -

<script async custom-element = "amp-mathml" 
   src = "https://cdn.ampproject.org/v0/amp-mathml-0.1.js">
</script>

MathML AMP 标签

mathML amp 标签的格式如下所示 -

<amp-mathml layout = "container" 
   data-formula = "\[x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\]">
</amp-mathml>

请注意，数据公式是给定公式的强制属性。

例子

让我们通过示例更好地理解这个标签。

<!doctype html>
<html amp lang = "en">
   <head>
      <meta charset = "utf-8">
      <script async src = "https://cdn.ampproject.org/v0.js"></script>
      <title>Google AMP - MathML</title>
      <link rel = "canonical" href = " http://example.ampproject.org/article-metadata.html">
      <meta name = "viewport" content = "width = device-width,minimum-scale = 1,initial-scale = 1">

      <style amp-boilerplate>
         body{
            -webkit-animation:
            -amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:
            -amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:
            -amp-start 8s steps(1,end) 0s 1 normal both;animation:
            -amp-start 8s steps(1,end) 0s 1 normal both
         }
         @-webkit-keyframes 
         -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes 
         -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes 
         -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes 
         -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes 
         -amp-start{from{visibility:hidden}to{visibility:visible}}
      </style>
      <noscript>
         <style amp-boilerplate>
            body{
               -webkit-animation:none;
               -moz-animation:none;
               -ms-animation:none;
               animation:none
            }
         </style>
      </noscript>

      <script async custom-element = "amp-mathml" 
         src = "https://cdn.ampproject.org/v0/amp-mathml-0.1.js">
      </script>
   </head>
   <body>
      <h1>Google AMP - MathML Example</h1>
      <amp-mathml layout = "container" 
         data-formula = "\[x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\]">
      </amp-mathml>
   </body>
</html>

输出

Amp-mathml 标签执行时会在 iframe 中呈现显示，如下所示 -

数学示例

数学示例