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

Copy Button

Introduction

This is a sample showing how to add a "copy" button to your page, allowing the user to copy some fixed item per-page. This uses an amp-iframe, running custom JS, that loads in the background while a placeholder button remains visible.

Setup

We use amp-iframe to load a copy button, replacing a placeholder button.

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

How a "Copy" button works

By including amp-iframe with custom JS (this is in /static/samples/files/copier.html), we can perform any operation from vanilla JS, including copy.

The iframe is allowed to load anywhere on your AMP as it has a placeholder, and in our case, this placeholder has exactly the same presentation as the final display so it's not obvious when it is "swapped out". Users who hover over the button before it loads will see a "disabled" indicator.

We pass the data to be copied via the hash. The copier "helper" page can always serve the same HTML and can be cached in its own right.

<amp-iframe sandbox="allow-scripts"
  width="64"
  height="42"
  frameborder="0"
  src="/static/samples/files/copier.html#This text was copied from amp.dev!">
  <button class="copy-button"
    placeholder
    disabled>Copy</button>
</amp-iframe>

Dynamically change the value to copy

We can use amp-bind to update the value being passed to the copier iframe. Whenever the value is changed (via input-debounced), we update the hash param on the iframe so the copier can copy the new value.

First we define an input field which updates an amp-state variable called textToCopy.

Copy the contents of the input
<span>
  <input type="text"
    value="Hello World"
    on="input-debounced: AMP.setState({ textToCopy: event.value })">
  <div>Copy the contents of the input</div>
</span>

Then we bind the iframe's src attribute to the value of the textToCopy amp-state variable.

<amp-iframe sandbox="allow-scripts"
  width="64"
  height="42"
  frameborder="0"
  src="/static/samples/files/copier.html#Hello World"
  [src]="'/static/samples/files/copier.html#' + textToCopy">
  <button class="copy-button"
    placeholder
    disabled>Copy</button>
</amp-iframe>
需要进一步说明?

如果此页面的说明未能涵盖您的所有问题,欢迎与其他 AMP 用户取得联系,讨论您的具体用例。

前往 Stack Overflow
一项无法解释的功能?

AMP 项目强烈鼓励您参与其中并作出贡献!我们希望您能成为我们开源社区的持续参与者,但我们也欢迎您对热衷问题做出单次贡献。

在 GitHub 上编辑实例