#BlackLivesMatter
Do you build things with AMP? Fill out the new AMP Developer Survey!
AMP
  • websites

Currency Conversion

Introduction

This example shows how to use amp-bind to filter JSON data on select of option in select dropdown.

Setup

We include amp-bind to track the state

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

Implementation

This example uses a public currency endpoint to populate amp-state. The default value is EUR (euro) and we convert the currency values by updating amp-state when the user changes the dropdown to a different currency.

Banana

EUR 2.00
<amp-state id="currencyFilter"
  src="https://api.exchangeratesapi.io/latest"></amp-state>
<amp-state id="defState">
  <script type="application/json">
    {
      "currencyRate": 1,
      "currencyDecimal": 2,
      "currencyCode": "EUR"
    }
  </script>
</amp-state>
<select on="change:AMP.setState({
              defState: {
                currencyRate: event.value == 'EUR' ? 1 : currencyFilter.rates[event.value], 
                currencyCode: event.value
              }
            })">
  <option value="CAD">CAD</option>
  <option value="EUR"
    selected>EUR</option>
  <option value="HKD">HKD</option>
  <option value="ISK">ISK</option>
  <option value="USD">USD</option>
  <option value="GBP">GBP</option>
  <option value="RUB">RUB</option>
  <option value="INR">INR</option>
</select>
<h3>Banana</h3>
<div>
  <span [text]="defState.currencyCode">EUR</span>
  <span [text]="(2*defState.currencyRate).toFixed(defState.currencyDecimal)">2.00</span>
</div>
<amp-img src="https://cdn.glitch.com/cbcdd9ba-70f9-4d53-a19d-486e4b70f73f%2F440px-Cavendish_Banana_DS.jpg?v=1578089065672"
  height="112"
  width="112"
  layout="fixed"
  title="banana"></amp-img>
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