AMP
  • websites

amp-bind-recaptcha

Introduction

This example shows how to create recaptcha input using just amp-bind.

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>

Implementation

The amp-state below defines three different states that the recaptcha equation could be.

<amp-state id="captcha">
  <script type="application/json">
    {
       "state1": {
             "result": "10",
             "condition": "+",
             "captchaCorrect": "6"

       },
       "state2": {
             "result": "2",
             "condition": "-",
             "captchaCorrect": "6"
       },
       "state3": {
             "result": "8",
             "condition": "*",
             "captchaCorrect": "2"
       }
     }
  </script>
</amp-state>

Form

Recaptcha forces users to provide the correct input using the [pattern] requirement. The [pattern] updates dynamically as the state changes. In order for the recaptcha to work on first pass, disable the input until the amp-bind 'state' variable is set (i.e. [disabled]="!state"). As another workaround, you could set a default pattern (without brackets) and have the [pattern] update as user refreshes the conditional. Upon refresh the 'state' is updated to provide a new equation.

+ 4 = 10
<form action="https://www.google.com/" method="get" target="_top">
  <input name="s" placeholder="Type Anything" 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 [text]="captcha[state].condition">+</span>
    <span>4</span>
    <span>=</span>
    <span [text]="captcha[state].result">10</span>
    <span on="tap:AMP.setState({state: (state == 'state1' ? 'state2' : state == 'state2' ? 'state3': 'state1')})" role="button" tabindex="0"></span>
    <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">
</form>
Perlu penjelasan lebih lanjut?

Jika penjelasan pada halaman ini tidak menjawab semua pertanyaan Anda, silakan hubungi pengguna AMP lainnya untuk mendiskusikan contoh penggunaan Anda yang spesifik.

Kunjungi Stack Overflow
Fitur yang tidak dijelaskan?

Proyek AMP sangat menganjurkan partisipasi dan kontribusi Anda! Kami berharap Anda akan terus ambil bagian dalam komunitas sumber terbuka kami, tetapi kami juga menerima kontribusi satu kali untuk topik tertentu yang Anda minati.

Edit sampel di GitHub