Google AMP - 按钮



按钮是 AMP 的另一个功能。请注意,AMP 中的按钮没有变化,它们的使用方式与标准 HTML 按钮标签一样。AMP 页面中按钮的唯一区别在于其事件的工作方式。

在本章中,我们将通过一些示例来展示按钮的工作原理以及如何在 AMP 组件中使用它。

灯箱示例代码

以下示例向我们展示了如何使用按钮来显示/隐藏 amp-lightbox,如下所示:

<!doctype html>
<html amp lang = "en">
   <head>
      <meta charset = "utf-8">
      <script async src = "https://cdn.ampproject.org/v0.js"></script>
      <title>Google AMP - Amp Lightbox</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-an
               imation:none;animation:none
            }
         </style>
      </noscript>

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

      <style amp-custom>
         amp-img {
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 5px;
         }
         button{ 
            background-color: 
            #ACAD5C; color: white; 
            padding: 12px 20px; 
            border: none; 
            border-radius: 4px; 
            cursor: pointer; 
            float: left;
         }
         
         .lightbox {
            background: rgba(211,211,211,0.8);
            width: 100%;
            height: 100%;
            position: absolute;
            display: flex;
            align-items: center;
            justify-content: center;
         }
      </style>
   </head>
   <body>
      <h3>Google AMP - Amp Lightbox</h3>
      <button on = "tap:my-lightbox">
         Show LightBox
      </button>
      <amp-lightbox id = "my-lightbox" layout = "nodisplay">
         <div class = "lightbox" on = "tap:my-lightbox.close" tabindex = "0">
            <amp-img alt = "Beautiful Flower"
               src = "images/flower.jpg"
               width = "246"
               height = "205">
            </amp-img>
         </div>
      </amp-lightbox>
   </body>
</html>

输出

Sample Code for Lightbox

Sample Code for Lightboxs

现在,您可以点击屏幕上的任意位置关闭灯箱。

在以上示例中,我们使用了如下所示的代码来使用按钮:

<button on = "tap:my-lightbox">
   Show LightBox
</button>
Next, we have added action on the button using on attribute as shown: 
on = "tap:my-lightbox"

当您点击按钮时,操作将发生。请注意,灯箱的 id 已赋予它。当用户点击按钮时,灯箱将打开。类似地,您可以将按钮与任何组件上的 on 操作一起使用以与其交互。

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