Google AMP amp-img用法及代碼示例

AMP HTML頁麵不支持標準的img標簽，我們使用amp-img組件在AMP HTML頁麵中插入圖像。 amp-img組件在運放運行時不需要將腳本嵌入到標頭中。

所需腳本：amp-img是內置元素，因此會通過AMP運行時自動導入。

HTML

<script async src= 
    "https://cdn.ampproject.org/v0.js"> 
</script>

屬性：

src:指定要嵌入的圖像的URL或路徑。
sizes:定義媒體查詢的大小，僅當屬性rel =” icon”時才可以使用。
attribution:這是一個描述圖像屬性的字符串。
height:定義圖像的高度。
width:定義圖像的寬度。

例：

HTML

<!doctype html> 
<html ⚡> 
  
<head> 
    <meta charset="utf-8"> 
    <title>Google AMP amp-img</title> 
> 
    <script async src= 
        "https://cdn.ampproject.org/v0.js"> 
    </script> 
      
    <link rel="canonical" href= 
"https://amp.dev/documentation/examples/components/amp-img/index.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> 
    <style amp-custom> 
        amp-img>div[fallback] { 
            display:flex; 
            align-items:center; 
            justify-content:center; 
            background:#f2f2f2; 
            border:solid 1px #ccc; 
        } 
    </style> 
</head> 
  
<body> 
  
    <!-- A simpler esponsive image-->
    <amp-img src= 
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20200817185016/gfg_complete_logo_2x-min.png"
        width="1080" height="610" 
        layout="responsive" alt="AMP"> 
    </amp-img> 
  
    <!--shows a `fallback` in case the  
        image couldn't be loaded. -->
    <amp-img src="does-not-exist.jpg" 
        width="300" height="100" 
        layout="responsive" 
        alt="a non-existent image"> 
        <div fallback>offline</div> 
    </amp-img> 
  
    <amp-img src= 
"https://media.geeksforgeeks.org/wp-content/uploads/resize1-1.png"
        width="475" height="268"
        layout="responsive" alt="AMP"> 
        <noscript> 
            <img src="/static/samples/img/amp.jpg" 
            width="475" height="268" alt="AMP"> 
        </noscript> 
    </amp-img> 
</body> 
  
</html>

輸出：

相關用法

注：本文由純淨天空篩選整理自somsagar2019大神的英文原創作品 Google AMP amp-img。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。