clipboard.js/README.md

# clipboard.js

> A modern approach to copy & cut to the clipboard. No Flash. No dependencies. Just 2kb.

<a href="http://zenorocha.github.io/clipboard.js/"><img width="728" src="https://cloud.githubusercontent.com/assets/398893/9983535/5ab0a950-5fb4-11e5-9602-e73c0b661883.jpg" alt="Demo"></a>

## Why

Copy text to the clipboard shouldn't be hard. It shouldn't require dozens of steps to configure or hundreds of KBs to load. But most of all, it shouldn't depend on Flash or any bloated framework.

That's why clipboard.js exists.

And don't be a jerk, use it responsibly :)

## Install

You can get it on npm.

```
npm install clipboard --save
```

Or bower, too.

```
bower install clipboard --save
```

If you're not into package management, just [download a ZIP](https://github.com/zenorocha/clipboard.js/archive/master.zip) file.

## Setup

First, include the script located on the `dist` folder

```html
<script src="dist/clipboard.min.js"></script>
```

Now, you need to instantiate it using a DOM selector. This selector corresponds to the trigger element, i.e. `<button>`.

```js
new Clipboard('.btn');
```

# Usage

We're living a _declarative renaissance_, that's why we decided to take advantage of [HTML5 data attributes](https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes) for better usability.

### Copy text from attribute

The easiest way to copy some content to the clipboard, is to include a `data-text` attribute in your trigger element.

<a href="http://zenorocha.github.io/clipboard.js/#example-1"><img width="147" alt="example-1" src="https://cloud.githubusercontent.com/assets/398893/10000347/6e16cf8c-6050-11e5-9883-1c5681f9ec45.png"></a>

```html
<!-- Trigger -->
<button class="btn" data-text="Just because you can doesn't mean you should — clipboard.js">
    Copy to clipboard
</button>
```

### Copy text from another element

Alternatively, you can copy content from another element by adding a `data-target` attribute in your trigger element.

The value you include on this attribute needs to match another's element `id` attribute.

<a href="http://zenorocha.github.io/clipboard.js/#example-2"><img width="473" alt="example-2" src="https://cloud.githubusercontent.com/assets/398893/9983467/a4946aaa-5fb1-11e5-9780-f09fcd7ca6c8.png"></a>

```html
<!-- Target -->
<input id="foo" value="https://github.com/zenorocha/clipboard.js.git">

<!-- Trigger -->
<button class="btn" data-target="foo">
    <img src="assets/clippy.svg" alt="Copy to clipboard">
</button>
```

### Cut text from another element

Additionally, you can define a `data-action` attribute to specify if you want to either `copy` or `cut` content.

If you omit this attribute, `copy` will be used by default.

<a href="http://zenorocha.github.io/clipboard.js/#example-2"><img width="473" alt="example-3" src="https://cloud.githubusercontent.com/assets/398893/10000358/7df57b9c-6050-11e5-9cd1-fbc51d2fd0a7.png"></a>

```html
<!-- Target -->
<textarea id="bar">Mussum ipsum cacilds...</textarea>

<!-- Trigger -->
<button class="btn" data-action="cut" data-target="bar">
    Cut to clipboard
</button>
```

As you may expect, the `cut` action only works on `<input>` or `<textarea>` elements.

## Events

There are cases where you'd like to capture what has been copied/cut or even check if there was an error.

That's why we fire custom events such as `success` and `error` for you to listen and implement your custom logic.

But to achieve that, first you need to access the `triggers` property from your clipboard instance.

```js
var clipboard = new Clipboard('.btn');
var btns = clipboard.triggers;
```

Internally, this property is just a collections of nodes resulted from a `querySelectorAll` operation. So all you have to do now is loop through that collection and attach listeners.

```js
for (var i = 0; i < btns.length; i++) {
    btns[i].addEventListener('success', function(e) {
        console.info('Action:', e.detail.action);
        console.info('Text:', e.detail.text);
    });

    btns[i].addEventListener('error', function(e) {
        alert(e.detail);
    });
}
```

## Browser Support

This library relies on both [Selection](https://developer.mozilla.org/en-US/docs/Web/API/Selection) and [execCommand](https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand) APIs. When combined, they're supported in the following browsers.

| <img src="http://zenorocha.github.io/clipboard.js/assets/chrome.png" width="48px" height="48px" alt="Chrome logo"> | <img src="http://zenorocha.github.io/clipboard.js/assets/firefox.png" width="48px" height="48px" alt="Firefox logo"> | <img src="http://zenorocha.github.io/clipboard.js/assets/firefox.png" width="48px" height="48px" alt="Internet Explorer logo"> | <img src="http://zenorocha.github.io/clipboard.js/assets/opera.png" width="48px" height="48px" alt="Opera logo"> | <img src="http://zenorocha.github.io/clipboard.js/assets/safari.png" width="48px" height="48px" alt="Safari logo"> |
|:---:|:---:|:---:|:---:|:---:|
| 42+ ✔ | 41+ ✔ | 9+ ✔ | 29+ ✔ | Nope ✘ |

## License

[MIT License](http://zenorocha.mit-license.org/) © Zeno Rocha