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favicon.js finds a website’s favicon URL, if any.

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# favicon.js `1.3.0`

Finds a website’s favicon URL, if any. Requires a context, like a browser
extension, that allows cross-origin requests.

## Example

```html
<script type="text/javascript" src="favicon.js"></script>
<script type="text/javascript">
  var favicon = new Favicon;

favicon.get('https://disconnect.me/', function(url) {
    jQuery('#favicon').attr('src', url);
        // favicon.js automagically loads jQuery.
  });
</script>
<img id="favicon" width="16" height="16" src="default.png" alt="A favicon.">
```

## Constructor

### Favicon([{string} alt])

A class for finding a website’s favicon URL, if any.

#### Parameter

`alt` A default favicon URL, absolute or relative.

## Methods

### {string} getAlt()

Fetches the default favicon URL.

#### Return value

An absolute or relative URL.

### {Favicon} setAlt({string} alt)

Mungs the default favicon URL.

#### Parameter

`alt` An absolute or relative URL.

#### Return value

The favicon object.

### {Favicon} get({string} url, {function(string)} callback)

Finds a favicon URL.

#### Parameters

`url`      A website’s absolute URL or hostname.

`callback` A continuation, to execute when the method completes, that takes a
           favicon URL.

#### Return value

The favicon object.

## Author

[Brian Kennish](https://github.com/byoogle)

## License

This Source Code Form is subject to the terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not distributed with this file, You can obtain one
at https://mozilla.org/MPL/2.0/.

## See also

[jQuery](https://github.com/jquery/jquery)

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