amp-autocomplete-email

Introduction

An autocomplete-enabled input field suggests completed results corresponding to the user input as they type into the input field. This feature can help the user to carry out their task more quickly.

Data can be fetched from a JSON endpoint.

The AMP runtime.

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

The AMP for Email boilerplate.

<style amp4email-boilerplate>
  body {
    visibility: hidden;
  }
</style>

Setup

Import the amp-autocomplete component.

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

Import the amp-mustache component for content templating and rendering of responses.

<script
  async
  custom-template="amp-mustache"
  src="https://cdn.ampproject.org/v0/amp-mustache-0.2.js"
></script>

<style amp-custom>
  .custom {
    padding-top: 4px;
    font: 10pt 'Courier New', Courier, monospace;
  }
  .profile-pic {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    margin-left: -5px;
    float: left;
  }
</style>
</head>
<body>
<h2>Basic usage</h2>

Basic usage

An amp-autocomplete must always have an input field specified with an input or textarea tag and a datasource. When a user types into this input field, relevant suggestions will automatically appear below the input field.

A datasource must be a JSON object containing an array property items and can be provided as remote data through the src attribute.

Because server-side filtering is mandatory in the email format, it is wise to pair the src and query attributes in order to passed user inputs to a statically generated endpoint. For example if a src="https://example.com and query="q", then a user who types in abc will get the fetch JSON result from https://example.com?q=abc.

Suggesting rich content

<amp-autocomplete
  min-characters="1"
  src="https://amp.dev/documentation/examples/api/autosuggest/search_list"
  query="q"
>
  <input type="search" name="queryInput" />
  <template type="amp-mustache">
    <div data-value="{{.}}">
      {{.}}
    </div>
  </template>
</amp-autocomplete>

<h2>Suggesting rich content</h2>

Suggesting rich content

More complicated data can be passed into autocompleted with an array of JsonObjects in "items".

{ "items" : [
    {
        "value" : "Albany",
        "state" : "New York",
        "areaCode" : 518,
        "population" : 98251
    }, {
        "value" : "Annapolis",
        "state" : "Maryland",
        "areaCode" : 410,
        "population" : 39321
    }, {
        "value" : "Trenton",
        "state" : "New Jersey",
        "areaCode" : 609,
        "population" : 84964
    }
] }

The corresponding display of these data in the amp-autocomplete can be specified through a template.

<template type="amp-mustache" id="amp-template-custom">
  <div class="city-item" data-value="{{value}}, {{state}}">
    <div>{{value}}, {{state}}</div>
    <div class="custom-population">Population: {{population}}</div>
  </div>
</template>

Inline autocomplete

<amp-autocomplete
  min-characters="0"
  src="https://amp.dev/documentation/examples/api/autosuggest/cities"
  query="q"
>
  <input type="search" name="city" />
  <template type="amp-mustache" id="amp-template-custom">
    <div class="city-item" data-value="{{value}}, {{state}}">
      <div>{{value}}, {{state}}</div>
      <div class="custom">Population: {{population}}</div>
    </div>
  </template>
</amp-autocomplete>

<h2>Inline autocomplete</h2>

Displaying suggestions inline

Suggestions can be triggered on a specified character token in an amp-autocomplete for multiple autosuggestions in a single input by using the inline attribute.

The token for triggering the autosuggestion must be the provided value for the inline attribute. For example, if inline="+", then when the + token is entered by the user, any relevant suggestions will be displayed. Otherwise, the field will behave the same as an unenhanced input field. The inline attribute does not support the empty string, or "" as a legitimate token value on amp-autocomplete.

<amp-autocomplete
  inline="+"
  min-characters="1"
  src="https://amp.dev/documentation/examples/api/autosuggest/characters"
  query="q"
>
  <textarea
    autoexpand
    rows="2"
    cols="50"
    placeholder="Type your message here"
    name="message"
  ></textarea>
  <template type="amp-mustache">
    <div class="close-friends" data-value="{{ email }}">
      <amp-img
        class="profile-pic"
        height="30"
        width="30"
        layout="responsive"
        alt="Profile picture of AMP logo"
        src="https://amp.dev/static/samples/img/favicon.png"
      ></amp-img>
      <div class="info">
        <div>{{ name }}</div>
        <div class="custom">{{ email }}</div>
      </div>
    </div>
  </template>
</amp-autocomplete>

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Written by @caroqliu