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# Tabs

JavaScript

Tabs are elements that help you organize and navigate multiple documents in a single container. They can be used for switching between items in the container.

## Basics

There are two pieces to a tabbed interface: the tabs themselves, and the content for each tab. The tabs are an element with the class `.tabs`, and each item has the class `.tabs-title`. Each tab contains a link to a tab. The `href` of each link should match the ID of a tab.

    <ul class="tabs" data-tabs id="example-tabs">
      <li class="tabs-title is-active"><a href="#panel1" aria-selected="true">Tab 1</a></li>
      <li class="tabs-title"><a href="#panel2">Tab 2</a></li>
    </ul>

The tab content container has the class `.tabs-content`, while each section has the class `.tabs-panel`. Each content pane also has a unique ID, which is targeted by a link in the tabstrip.

    <div class="tabs-content" data-tabs-content="example-tabs">
      <div class="tabs-panel is-active" id="panel1">
        <p>Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.</p>
      </div>
      <div class="tabs-panel" id="panel2">
        <p>Suspendisse dictum feugiat nisl ut dapibus.  Vivamus hendrerit arcu sed erat molestie vehicula. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor.  Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor.</p>
      </div>
    </div>

Put it all together, and we get this:

- Tab 1
- Tab 2
- Tab 3
- Tab 4
- Tab 5
- Tab 6

one

Check me out! I'm a super cool Tab panel with text content!

two

three

Check me out! I'm a super cool Tab panel with text content!

four

five

Check me out! I'm a super cool Tab panel with text content!

six

## Vertical Tabs

Add the `.vertical` class to a tabstrip to stack tabs vertically. You can also place the tabstrip and the tab contents in a grid to make them sit side-by-side.

    <div class="row collapse">
      <div class="medium-3 columns">
        <ul class="tabs vertical" id="example-vert-tabs" data-tabs>
          <li class="tabs-title is-active"><a href="#panel1v" aria-selected="true">Tab 1</a></li>
          <li class="tabs-title"><a href="#panel2v">Tab 2</a></li>
          <li class="tabs-title"><a href="#panel3v">Tab 3</a></li>
          <li class="tabs-title"><a href="#panel4v">Tab 4</a></li>
          <li class="tabs-title"><a href="#panel5v">Tab 5</a></li>
          <li class="tabs-title"><a href="#panel6v">Tab 6</a></li>
        </ul>
        </div>
        <div class="medium-9 columns">
        <div class="tabs-content vertical" data-tabs-content="example-vert-tabs">
          <div class="tabs-panel is-active" id="panel1v">
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
          </div>
          <div class="tabs-panel" id="panel2v">
            <p>Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.</p>
          </div>
          <div class="tabs-panel" id="panel3v">
            <img class="thumbnail" src="assets/img/generic/rectangle-3.jpg">
          </div>
          <div class="tabs-panel" id="panel4v">
            <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
          </div>
          <div class="tabs-panel" id="panel5v">
            <p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
          </div>
          <div class="tabs-panel" id="panel6v">
            <img class="thumbnail" src="assets/img/generic/rectangle-5.jpg">
          </div>
        </div>
      </div>
    </div>

- Tab 1
- Tab 2
- Tab 3
- Tab 4
- Tab 5
- Tab 6

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

## Collapsing Tabs

Add the attribute `data-active-collapse="true"` to a tabstrip to collapse active tabs.

    <ul class="tabs" data-active-collapse="true" data-tabs id="collapsing-tabs">
      <li class="tabs-title is-active"><a href="#panel1c" aria-selected="true">Tab 1</a></li>
      <li class="tabs-title"><a href="#panel2c">Tab 2</a></li>
      <li class="tabs-title"><a href="#panel3c">Tab 3</a></li>
      <li class="tabs-title"><a href="#panel4c">Tab 4</a></li>
    </ul>

    <div class="tabs-content" data-tabs-content="collapsing-tabs">
      <div class="tabs-panel is-active" id="panel1c">
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
      </div>
      <div class="tabs-panel" id="panel2c">
        <p>Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.</p>
      </div>
      <div class="tabs-panel" id="panel3c">
        <img class="thumbnail" src="assets/img/generic/rectangle-3.jpg">
      </div>
      <div class="tabs-panel" id="panel4c">
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
      </div>
    </div>

- Tab 1
- Tab 2
- Tab 3
- Tab 4

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

## Tabs and URLs

### Browser history

When the `data-deep-link` option is set to `true`, the current state of the tabset is recorded by adding a hash with the tab panel ID to the browser URL when a tab opens. By default, tabs replace the browser history (using `history.replaceState()`). Modify this behavior by using attribute `data-update-history="true"` to append to the browser history (using `history.pushState()`). In the latter case the browser back button will track each click that opens a tab panel.

By using deep linking (see below), the open state of a page's tabset may be shared by copy-pasting the browser URL.

### Deep linking

Add the attribute `data-deep-link="true"` to a tabstrip to:

- modify the browser history when a tab is clicked
- allow users to open a particular tab at page load with a hash-appended URL

    <ul class="tabs" data-deep-link="true" data-update-history="true" data-deep-link-smudge="true" data-deep-link-smudge="500" data-tabs id="deeplinked-tabs">
      <li class="tabs-title is-active"><a href="#panel1d" aria-selected="true">Tab 1</a></li>
      <li class="tabs-title"><a href="#panel2d">Tab 2</a></li>
      <li class="tabs-title"><a href="#panel3d">Tab 3</a></li>
      <li class="tabs-title"><a href="#panel4d">Tab 4</a></li>
    </ul>

    <div class="tabs-content" data-tabs-content="deeplinked-tabs">
      <div class="tabs-panel is-active" id="panel1d">
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
      </div>
      <div class="tabs-panel" id="panel2d">
        <p>Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.</p>
      </div>
      <div class="tabs-panel" id="panel3d">
        <img class="thumbnail" src="assets/img/generic/rectangle-3.jpg">
      </div>
      <div class="tabs-panel" id="panel4d">
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
      </div>
    </div>

- Tab 1
- Tab 2
- Tab 3
- Tab 4

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Vivamus hendrerit arcu sed erat molestie vehicula. Sed auctor neque eu tellus rhoncus ut eleifend nibh porttitor. Ut in nulla enim. Phasellus molestie magna non est bibendum non venenatis nisl tempor. Suspendisse dictum feugiat nisl ut dapibus.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

For example, http://example.com/#panel3d will open the third tab panel at page load. This example will open a new browser tab and scroll you to the open tab.

When linking directly to a tab panel, it might not be obvious that the content appears within a tab panel. An additional attribute `data-deep-link-smudge` rolls the page up slightly after deep linking (to a horizontal tabset) so that the tabstrip is at the top of the viewport.

    <ul class="tabs" data-deep-link="true" data-deep-link-smudge="true" data-deep-link-smudge-delay="600" data-tabs id="deeplinked-tabs-with-smudge">

## Sass Reference

### Variables

The default styles of this component can be customized using these Sass variables in your project's settings file.

Name | Type | Default Value | Description
--- | --- | --- | ---
`$tab-margin` | Number | `0` | Default margin of the tab bar.
`$tab-background` | Color | `$white` | Default background color of a tab bar.
`$tab-color` | Color | `$primary-color` | Font color of tab item.
`$tab-background-active` | Color | `$light-gray` | Active background color of a tab bar.
`$tab-active-color` | Color | `$primary-color` | Active font color of tab item.
`$tab-item-font-size` | Number | `rem-calc(12)` | Font size of tab items.
`$tab-item-background-hover` |  | `$white` | Default background color on hover for items in a Menu.
`$tab-item-padding` | Number | `1.25rem 1.5rem` | Default padding of a tab item.
`$tab-expand-max` | Number | `6` | Maximum number of `expand-n` classes to include in the CSS.
`$tab-content-background` | Color | `$white` | Default background color of tab content.
`$tab-content-border` | Color | `$light-gray` | Default border color of tab content.
`$tab-content-color` | Color | `$body-font-color` | Default text color of tab content.
`$tab-content-padding` | Number or List | `1rem` | Default padding for tab content.

### Mixins

We use these mixins to build the final CSS output of this component. You can use the mixins yourself to build your own class structure out of our components.

#### tabs-container

    @include tabs-container;

Adds styles for a tab container. Apply this to a `<ul>`.

#### tabs-container-vertical

    @include tabs-container-vertical;

Augments a tab container to have vertical tabs. Use this in conjunction with `tabs-container()`.

#### tabs-title

    @include tabs-title;

Adds styles for the links within a tab container. Apply this to the `<li>` elements inside a tab container.

#### tabs-content

    @include tabs-content;

Adds styles for the wrapper that surrounds a tab group's content panes.

#### tabs-content-vertical

    @include tabs-content-vertical;

Augments a tab content container to have a vertical style, by shifting the border around. Use this in conjunction with `tabs-content()`.

#### tabs-panel

    @include tabs-panel;

Adds styles for an individual tab content panel within the tab content container.

## JavaScript Reference

### Initializing

The file `foundation.tabs.js` must be included in your JavaScript to use this plugin, along with `foundation.core.js`. This plugin also requires these utility libraries:

- `foundation.util.keyboard.js`

- `foundation.util.timerAndImageLoader.js`

### Foundation.Tabs

Creates a new instance of tabs.

    var elem = new Foundation.Tabs(element, options);

Fires these events: Tabs#event:init

Name | Type | Description
--- | --- | ---
`element` | jQuery | jQuery object to make into tabs.
`options` | Object | Overrides to the default plugin settings.

### Plugin Options

Use these options to customize an instance of Tabs. Plugin options can be set as individual data attributes, one combined `data-options` attribute, or as an object passed to the plugin's constructor. Learn more about how JavaScript plugins are initialized.

Name | Type | Default | Description
--- | --- | --- | ---
`data-deep-link` | `boolean` | `false` | Allows the window to scroll to content of pane specified by hash anchor
`data-deep-link-smudge` | `boolean` | `false` | Adjust the deep link scroll to make sure the top of the tab panel is visible
`data-deep-link-smudge-delay` | `number` | `300` | Animation time (ms) for the deep link adjustment
`data-update-history` | `boolean` | `false` | Update the browser history with the open tab
`data-auto-focus` | `boolean` | `false` | Allows the window to scroll to content of active pane on load if set to true. Not recommended if more than one tab panel per page.
`data-wrap-on-keys` | `boolean` | `true` | Allows keyboard input to 'wrap' around the tab links.
`data-match-height` | `boolean` | `false` | Allows the tab content panes to match heights if set to true.
`data-active-collapse` | `boolean` | `false` | Allows active tabs to collapse when clicked.
`data-link-class` | `string` | `tabs-title` | Class applied to `li`'s in tab link list.
`data-link-active-class` | `string` | `is-active` | Class applied to the active `li` in tab link list.
`data-panel-class` | `string` | `tabs-panel` | Class applied to the content containers.
`data-panel-active-class` | `string` | `is-active` | Class applied to the active content container.

### Events

These events will fire from any element with a Tabs plugin attached.

Name | Description
--- | ---
`deeplink.zf.tabs` | Fires when the zplugin has deeplinked at pageload
`collapse.zf.tabs` | Fires when the zplugin has successfully collapsed tabs.
`change.zf.tabs` | Fires when the plugin has successfully changed tabs.

### Methods

#### _handleTabChange

    $('#element').foundation('_handleTabChange', $target, historyHandled);

Opens the tab `$targetContent` defined by `$target`. Collapses active tab.

Fires these events: Tabs#event:change

Name | Type | Description
--- | --- | ---
`$target` | jQuery | Tab to open.
`historyHandled` | boolean | browser has already handled a history update

#### _openTab

    $('#element').foundation('_openTab', $target);

Opens the tab `$targetContent` defined by `$target`.

Name | Type | Description
--- | --- | ---
`$target` | jQuery | Tab to Open.

#### _collapseTab

    $('#element').foundation('_collapseTab', $target);

Collapses `$targetContent` defined by `$target`.

Name | Type | Description
--- | --- | ---
`$target` | jQuery | Tab to Open.

#### selectTab

    $('#element').foundation('selectTab', elem, historyHandled);

Public method for selecting a content pane to display.

Name | Type | Description
--- | --- | ---
`elem` | jQuery | jQuery object or string of the id of the pane to display.
`historyHandled` | boolean | browser has already handled a history update

#### destroy

    $('#element').foundation('destroy');

Destroys an instance of an tabs.

Fires these events: Tabs#event:destroyed