Google AMP amp-bind-recaptcha用法及代码示例

amp-bind允许元素通过数据绑定和简单的JSON-like表达式更改对用户输入的响应，而Recaptcha元素仅使用amp-bind创建一个Recaptcha输入。

必需的脚本：导入amp-bind，以便Recaptcha可以具有许多状态。

HTML

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

导入amp-form，以便可以使用Recaptcha输入来验证用户输入。

HTML

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

使用amp-state定义要在Recaptcha方程中使用的不同状态。

HTML

<amp-state id="captcha"> 
  <script type="application/json"> 
      { 
         "state1":{ 
               "result":"9", 
               "condition":"+", 
               "captchaCorrect":"5" 
  
         }, 
         "state2":{ 
               "result":"4", 
               "condition":"-", 
               "captchaCorrect":"8" 
         }, 
         "state3":{ 
               "result":"8", 
               "condition":"*", 
               "captchaCorrect":"2" 
         } 
       } 
    </script> 
</amp-state>

例：Recaptcha要求用户使用[pattern]要求提供正确的输入。 [pattern]随着状态变化而动态更新。

为了使重新安装验证程序第一次通过，必须禁用输入，直到设置了amp-bind变量为止。刷新后，将更新‘state’以提供新的方程式。

HTML

<!doctype html> 
<html amp> 
  
<head> 
    <title>Google AMP amp-bind-recaptcha</title> 
    <meta charset="utf-8"> 
    <script async src= 
        "https://cdn.ampproject.org/v0.js"> 
    </script> 
  
    <link rel="canonical" href= 
"https://amp.dev/documentation/examples/components/amp-bind-recaptcha/index.html"> 
  
    <meta name="viewport" content= 
"width=device-width,minimum-scale=1,initial-scale=1"> 
  
    <!-- Import `amp-bind` so recaptcha can  
        have multiple states -->
    <script async custom-element= 
        "amp-bind" src= 
"https://cdn.ampproject.org/v0/amp-bind-0.1.js"> 
    </script> 
  
    <!-- Recaptcha input used to verify user  
        for `amp-form` -->
    <script async custom-element= 
        "amp-form" src= 
"https://cdn.ampproject.org/v0/amp-form-0.1.js"> 
    </script> 
  
    <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> 
</head> 
  
<body style="text-align:center;"> 
    
    <h1 style="color:green"> 
        GeeksforGeeks 
    </h1> 
    
    <header> 
        Type text in the TextBox and Verify  
        captcha. <br>If you don't know the  
        captcha answer then <br>you can  
        refresh it for new recaptcha 
    </header> 
  
    <!-- The `amp-state` defines three  
        different states -->
    <amp-state id="captcha"> 
        <script type="application/json"> 
        { 
           "state1":{ 
                 "result":"9", 
                 "condition":"+", 
                 "captchaCorrect":"5" 
  
           }, 
           "state2":{ 
                 "result":"3", 
                 "condition":"-", 
                 "captchaCorrect":"7" 
           }, 
           "state3":{ 
                 "result":"12", 
                 "condition":"*", 
                 "captchaCorrect":"3" 
           } 
         } 
      </script> 
    </amp-state> 
      
    <form action="https://www.geeksforgeeks.org.com/" 
        method="get" target="_top"> 
        <input name="s" placeholder="Type Your Name ..." 
            type="text" on= 
            "input-debounced:AMP.setState({state:'state1'})"
            required> 
  
        <input [disabled]="!state" disabled type="text" 
            name [pattern]="captcha[state].captchaCorrect" 
            title="AMP recaptcha input" required> 
  
        <span ="captcha[state].condition">+</span> 
        <span>4</span> 
        <span>=</span> 
        <span ="captcha[state].result">10</span> 
        <span on= 
"tap:AMP.setState({state:(state == 'state1' ? 'state2':state == 'state2' ? 'state3':'state1')})"
            role="button" tabindex="0"> 
  
            <amp-img src= 
"https://fonts.gstatic.com/s/i/materialicons/autorenew/v4/24px.svg"
                width="24" height="24"> 
            </amp-img> 
            <input type="submit" value="Submit"> 
        </span> 
    </form> 
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自somsagar2019大神的英文原创作品 Google AMP amp-bind-recaptcha。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。