<h1 align="center">baguetteBox.js</h1>

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Simple and easy to use lightbox script written in pure JavaScript.

[Demo page](https://feimosi.github.io/baguetteBox.js/)

![Demo Page screenshot](http://i.imgur.com/GMmnud0.jpg)

## Table of contents

  * [Features](#features)
  * [Installation](#installation)
  * [Importing](#importing)
  * [Usage](#usage)
  * [Customization](#customization)
  * [API](#api)
  * [Responsive images](#responsive-images)
  * [Compatibility](#compatibility)
  * [Contributing](#contributing)
  * [Credits](#credits)
  * [License](#license)

## Features

* Written in pure JavaScript, no dependencies required
* Multiple-gallery support allows custom options for each
* Supports swipe gestures on touch-screen devices
* Full-screen mode available
* Modern and minimal look
* Image captions support
* Responsive images
* CSS3 transitions
* SVG buttons, no extra files to download
* Around 3.2KB gzipped
* With Accessibility in mind

## Installation

You can use one of the following methods:

### npm

```sh
npm install baguettebox.js --save
```

### Yarn
```sh
yarn add baguettebox.js
```

### Bower

```sh
bower install baguettebox.js --save
```

### CDN
1. Use one of the following CDN providers:
  - https://cdnjs.com/libraries/baguettebox.js
  - http://jsdelivr.com/projects/baguettebox.js

3. Copy URLs of the latest version (both `.js` and `.css` files)

2. Paste the URLs in your HTML file:

  ```html
<link rel="stylesheet" href="<CSS URL>">
<script src="<JS URL>" async></script>
  ```

### Manually

1. Download `baguetteBox.min.css` and `baguetteBox.min.js` files from the `dist` folder.
2. Include them somewhere in your document:

  ```html
<link rel="stylesheet" href="css/baguetteBox.min.css">
<script src="js/baguetteBox.min.js" async></script>
  ```

## Importing

### Traditional approach

If you don't use JavaScript modules and include the file with a `<script>` tag, you don't have to import anything explicitly. `baguetteBox` will be available in the global scope.

### CommonJS

```js
const baguetteBox = require('baguettebox.js');
```

### ES2015 modules

```js
import baguetteBox from 'baguettebox.js';
```

### Sass

```scss
@import 'baguettebox.js/dist/baguetteBox.min.css';
```

## Usage

Initialize the script by running:

```js
baguetteBox.run('.gallery');
```

where the first argument is a selector to a gallery (or galleries) containing `a` tags. The HTML code may look like this:

```html
<div class="gallery">
    <a href="img/2-1.jpg" data-caption="Image caption">
        <img src="img/thumbnails/2-1.jpg" alt="First image">
    </a>
    <a href="img/2-2.jpg">
        <img src="img/thumbnails/2-2.jpg" alt="Second image">
    </a>
    ...
</div>
```

To use captions put a `title` or `data-caption` attribute on the `a` tag.

## Customization

You can pass an object with custom options as the second parameter.

```js
baguetteBox.run('.gallery', {
    // Custom options
});
```

The following options are available:

| Option | Type | Default | Description |
| --- | --- | --- | --- |
| `captions` | `Boolean` \| `function(element)` | `true` | Display image captions. Passing a function will use a string returned by this callback. The only argument is `a` element containing the image. Invoked in the context of the current gallery array |
| `buttons` | `Boolean` \| `'auto'` | `'auto'` | Display buttons. `'auto'` hides buttons on touch-enabled devices or when only one image is available |
| `fullScreen` | `Boolean` | `false` | Enable full screen mode |
| `noScrollbars` | `Boolean` | `false` | Hide scrollbars when gallery is displayed |
| `bodyClass` | `String` | `'baguetteBox-open'` | Class name that will be appended to the `body` when lightbox is visible (works in IE 10+) |
| `ignoreClass` | `String` | `null` | It will ignore images with given class put on `a` tag |
| `titleTag` | `Boolean` | `false` | Use caption value also in the gallery `img.title` attribute |
| `async` | `Boolean` | `false` | Load files asynchronously |
| `preload` | `Number` | `2` | How many files should be preloaded |
| `animation` | `'slideIn'` \| `'fadeIn'` \| `false` | `'slideIn'` | Animation type |
| `afterShow` | `function` | `null` | Callback to be run after showing the overlay |
| `afterHide` | `function` | `null` | Callback to be run after hiding the overlay |
| `onChange` | `function(currentIndex, imagesCount)` | `null` | Callback to be run when image changes |
| `overlayBackgroundColor` | `String` | `'rgba`<br>`(0,0,0,0.8)'` | Background color for the lightbox overlay |
| `filter` | `RegExp` | `/.+\.(gif\|jpe?g\|png\|webp)/i` | Pattern to match image files. Applied to the `a.href` attribute |

## API

### `run(selector, userOptions)`

Initialize baguetteBox.js

- @param `selector` {string} - valid CSS selector used by `querySelectorAll`
- @param `userOptions` {object} - custom options (see [#Customization](#customization))
- @return {array} - an array of gallery objects (reflects elements found by the selector)

### `show(index, gallery)`

Show (if hidden) and move the gallery to a specific index

- @param `index` {number} - the position of the image
- @param `gallery` {array} - gallery which should be opened, if omitted assumes the currently opened one
- @return {boolean} - true on success or false if the index is invalid

Usage:

```js
const gallery = baguetteBox.run('.gallery');
baguetteBox.show(index, gallery[0]);
```

### `showNext`

Switch to the next image

- @return {boolean} - true on success or false if there are no more images to be loaded

### `showPrevious`

Switch to the previous image

- @return {boolean} - true on success or false if there are no more images to be loaded

### `hide`

Hide the gallery

### `destroy`

Remove the plugin with any event bindings

## Responsive images

To use this feature, simply put `data-at-{width}` attributes on `a` tags with a value being the path to the desired image. `{width}` should be the maximum screen width the image can be displayed at. The script chooses the first image with `{width}` greater than or equal to the current screen width for best user experience.
That last `data-at-X` image is also used in the case of a screen larger than X.

Here's an example of what the HTML code can look like:

```html
<a href="img/2-1.jpg"
  data-at-450="img/thumbs/2-1.jpg"
  data-at-800="img/small/2-1.jpg"
  data-at-1366="img/medium/2-1.jpg"
  data-at-1920="img/big/2-1.jpg">
    <img src="img/thumbs/2-1.jpg">
</a>
```

If you have 1366x768 resolution baguetteBox.js will choose `"img/medium/2-1.jpg"`. If, however, it's 1440x900 it'll choose `"img/big/2-1.jpg"`. Keep the `href` attribute as a fallback (link to a bigger image e.g. of HD size) for older browsers.

## Compatibility

Desktop:
* IE 8+
* Chrome
* Firefox 3.6+
* Opera 12+
* Safari 5+

Mobile:
* Safari on iOS
* Chrome on Android

## Contributing

Feel free to report any issues! If you wish to contribute by fixing a bug or implementing a new feature, please first read the [CONTRIBUTING](./CONTRIBUTING.md) guide.

## Credits

Creation of `baguetteBox.js` was inspired by a great jQuery plugin [touchTouch](https://github.com/martinaglv/touchTouch).

Huge thanks for providing a testing platform go to [![BrowserStack](https://i.imgur.com/rlVVZwG.png)](http://browserstack.com/)

## License

Copyright (c) 2018 [feimosi](https://github.com/feimosi/)

This content is released under the [MIT License](https://opensource.org/licenses/MIT).
