Tabs

Create a widget of tabbable panes of local content. The tabs component is built upon navs and cards internally, and provides full keyboard navigation control of the tabs.

For navigation based tabs (i.e. tabs that would change the URL), use the <b-nav> component instead.

Basic usage

<div>
  <b-tabs content-class="mt-3">
    <b-tab title="first" active>I'm the first fading tab</b-tab>
    <b-tab title="second">I'm the second tab content</p></b-tab>
    <b-tab title="disabled" disabled>Disabled tab!></p></b-tab>
  </b-tabs>
</div>

<!-- b-tabs.vue -->

Tip: You should supply each child <b-tab> component a unique key value if dynamically adding or removing <b-tab> components (i.e. v-if or for loops). The key attribute is a special Vue attribute, see https://vuejs.org/v2/api/#key).

Cards Integration

Tabs support integrating with Bootstrap cards. Just add the card property to <b-tabs>. and place it inside a <b-card> component. Note that you should add no-body prop on the <b-card> component in order to properly decorate the card header and remove the extra padding introduced by card-body.

<div>
  <b-card no-body>
    <b-tabs card>
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-card.vue -->

When <b-tabs> is in card mode, each <b-tab> sub-component will automatically have the card-body class applied (this class provides the padding around the tab content). To disable the card-body class, set the no-body prop on <b-tab> sub component.

<div>
  <b-card no-body>
    <b-tabs card>
      <b-tab no-body title="Picture 1">
        <b-card-img bottom src="https://picsum.photos/600/200/?image=21" />
        <b-card-footer>Picture 1 footer</b-card-footer>
      </b-tab>

      <b-tab no-body title="Picture 2">
        <b-card-img bottom src="https://picsum.photos/600/200/?image=25" />
        <b-card-footer>Picture 2 footer</b-card-footer>
      </b-tab>

      <b-tab no-body title="Picture 3">
        <b-card-img bottom src="https://picsum.photos/600/200/?image=26" />
        <b-card-footer>Picture 3 footer</b-card-footer>
      </b-tab>

      <b-tab title="Text">
        <h5>This tab does not have the <code>no-body</code> prop set</h5>
        Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum
        consequat non elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur
        mollit voluptate est in duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit
        elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure.
      </b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-card-no-body.vue -->

Note: Setting the no-body prop on <b-tab> will have no affect when <b-tabs> is not in card mode (as the card-body class is only set when in card mode).

Pills variant

Tabs use the tabs styling by default. Just add pills property to <b-tabs> for the pill style variant.

<div>
  <b-card no-body>
    <b-tabs pills card>
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-pills.vue -->

Bottom placement of tab controls

Visually move the tab controls to the bottom by setting the prop end

<div>
  <b-card no-body>
    <b-tabs pills card end>
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-bottom.vue -->

Caveats:

  • Bottom placement visually works best with the pills variant. When using the default tabs variant, you may want to provided your own custom styling classes, as Bootstrap V4 CSS assumes the tabs will always be placed on the top of the tabs content.
  • To provide a better user experience with bottom placed controls, ensure that the content of each tab pane is the same height and fits completely within the visible viewport, otherwise the user will need to scroll up to read the start of the tabbed content.

Note: the bottom prop has been deprecated in favor of the end prop.

Vertical tabs

Have the tab controls placed on the lefthand side by setting the vertical prop to true. Vertical tabs work with or without card mode enabled.

<div>
  <b-card no-body>
    <b-tabs pills card vertical>
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
      <b-tab title="Tab 3">Tab Contents 3</b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-vertical.vue -->

Visually move the tab controls to the right hand side by setting the end prop:

<div>
  <b-card no-body>
    <b-tabs pills card vertical end>
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
      <b-tab title="Tab 3">Tab Contents 3 </b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-vertical-end.vue -->

The width of the vertical tab controls will expand to fit the width of the tab title. To control the width, set a width utility class via the prop nav-wrapper-class. You can use values such as w-25 (25% width), w-50 (50% width), etc., or column classes such as col-2, col-3, etc.

<div>
  <b-card no-body>
    <b-tabs pills card vertical nav-wrapper-class="w-50">
      <b-tab title="Tab 1" active>Tab Contents 1</b-tab>
      <b-tab title="Tab 2">Tab Contents 2</b-tab>
      <b-tab title="Tab 3">Tab Contents 3</b-tab>
    </b-tabs>
  </b-card>
</div>

<!-- b-tabs-vertical-width.vue -->

Vertical placement visually works best with the pills variant. When using the default tabs variant, you may want to provided your own custom styling classes, as Bootstrap V4 CSS assumes the tab controls will always be placed on the top of the tabs content.

Note: overflowing text may occur if your width is narrower than the tab title. You may need additional custom styling.

Fade animation

Fade is enabled by default when changing tabs. It can disabled with no-fade property.

Add Tabs without content

If you want to add extra tabs that do not have any content, you can put them in tabs slot:

<div>
  <b-tabs>
    <!-- Add your b-tab components here -->
    <template slot="tabs">
      <b-nav-item href="#" @click="() => {}">Another tab</b-nav-item>
    </template>
  </b-tabs>
</div>

<!-- b-tabs-item-slot.vue -->

Note: extra (contentless) tabs should be a <b-nav-item> or have the class nav-item with a root element of <li> for proper rendering.

Add custom content to tab title

If you want to add custom content to tab title, like HTML code, icons, or another non-interactive Vue component, this possible by using title slot

<div>
  <b-tabs>
    <b-tab active>
      <template slot="title">
        <b-spinner type="grow" small /> I'm <i>Custom</i> <strong>Title</strong>
      </template>
      <p class="p-3">Tab Contents 1</p>
    </b-tab>

    <b-tab>
      <template slot="title">
        <b-spinner type="border" small /> Tab 2
      </template>
      <p class="p-3">Tab Contents 2</p>
    </b-tab>
  </b-tabs>
</div>

<!-- b-tabs-title-slot.vue -->

Do not place interactive elements/components inside the title slot. The tab button is a link which does not support child interactive elements per the HTML5 spec.

Apply custom classes to the generated nav-tabs or pills

The tab selectors are based on Bootstrap V4's nav markup ( i.e. ul.nav > li.nav-item > a.nav-link). In some situations, you may want to add classes to the <li> (nav-item) and/or the <a> (nav-link) on a per tab basis. To do so, simply supply the classname to the title-item-class prop (for the <li> element) or title-link-class prop (for the <a> element). Value's can be passed as a string or array of strings.

Note: The active class is automatically applied to the active tabs <a> element. You may need to accommodate your custom classes for this.

<template>
  <div>
    <b-card no-body>
      <b-tabs card v-model="tabIndex">
        <b-tab title="Tab 1" :title-link-class="linkClass(0)">Tab Contents 1</b-tab>
        <b-tab title="Tab 2" :title-link-class="linkClass(1)">Tab Contents 2</b-tab>
        <b-tab title="Tab 3" :title-link-class="linkClass(2)">Tab Contents 3</b-tab>
      </b-tabs>
    </b-card>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tabIndex: 0
      }
    },
    methods: {
      linkClass(idx) {
        if (this.tabIndex === idx) {
          return ['bg-primary', 'text-light']
        } else {
          return ['bg-light', 'text-info']
        }
      }
    }
  }
</script>

<!-- b-tabs-with-classes.vue -->

Keyboard Navigation

Keyboard navigation is enabled by default for ARIA compliance with tablists when a tab button has focus.

Keypress Action
LEFT or UP Activate the previous non-disabled tab
RIGHT or DOWN Activate the next non-disabled tab
SHIFT+LEFT or SHIFT+UP Activate the first non-disabled tab
HOME Activate the first non-disabled tab
SHIFT+RIGHT or SHIFT+DOWN Activate the last non-disabled tab
END Activate the last non-disabled tab
TAB Move focus to the active tab content
SHIFT+TAB Move focus to the previous control on the page

Disable keyboard navigation by setting the prop no-key-nav. Behavior will now default to regular browser navigation with TAB key.

Keypress Action
TAB Move to the next tab button or control on the page
SHIFT+TAB Move to the previous tab button or control on the page
ENTER Activate current focused button's tab

Programmatically activating and deactivating tabs

Use the <b-tabs> v-model to control which tab is active by setting the v-model to the index (zero-based) of the tab to be shown (see example below).

Alternatively, you can use the active prop on each <b-tab> with the .sync modifier to activate the tab, or to detect if a particular tab is active.

Each <b-tab> instance also provides two public methods to activate or deactivate the tab. The methods are .activate() and .deactivate(), respectively. If activation or deactivation fails (i.e. a tab is disabled or no tab is available to move activation to), then the currently active tab will remain active and the method will return false. You will need a reference to the <b-tab> in order to use these methods.

Advanced Examples

External controls using v-model

<template>
  <div>
    <!-- Tabs with card integration -->
    <b-card no-body>
      <b-tabs small card v-model="tabIndex">
        <b-tab title="General">I'm the first fading tab</b-tab>
        <b-tab title="Edit profile">
          I'm the second tab
          <b-card>I'm the card in tab</b-card>
        </b-tab>
        <b-tab title="Premium Plan" disabled>Sibzamini!</b-tab>
        <b-tab title="Info">I'm the last tab</b-tab>
      </b-tabs>
    </b-card>

    <!-- Control buttons-->
    <div class="text-center">
      <b-button-group class="mt-2">
        <b-button @click="tabIndex--">Previous</b-button>
        <b-button @click="tabIndex++">Next</b-button>
      </b-button-group>

      <div class="text-muted">Current Tab: {{ tabIndex }}</div>
    </div>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tabIndex: 0
      }
    }
  }
</script>

<!-- b-tabs-controls.vue -->

Dynamic Tabs + tabs slot

<template>
  <div>
    <b-card no-body>
      <b-tabs card>
        <!-- Render Tabs, supply a unique `key` to each tab -->
        <b-tab v-for="i in tabs" :key="`dyntab-${i}`" :title="`Tab ${i}`">
          Tab Contents {{ i }}
          <b-button size="sm" variant="danger" class="float-right" @click="() => closeTab(i)">
            Close tab
          </b-button>
        </b-tab>

        <!-- New Tab Button (Using tabs slot) -->
        <template slot="tabs">
          <b-nav-item @click.prevent="newTab" href="#"><b>+</b></b-nav-item>
        </template>

        <!-- Render this if no tabs -->
        <div slot="empty" class="text-center text-muted">
          There are no open tabs <br />
          Open a new tab using the <b>+</b> button above.
        </div>
      </b-tabs>
    </b-card>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        tabs: [],
        tabCounter: 0
      }
    },
    methods: {
      closeTab(x) {
        for (let i = 0; i < this.tabs.length; i++) {
          if (this.tabs[i] === x) {
            this.tabs.splice(i, 1)
          }
        }
      },
      newTab() {
        this.tabs.push(this.tabCounter++)
      }
    }
  }
</script>

<!-- b-tabs-dynamic.vue -->

Tabs Component Reference

<b-tabs>

Properties

PropertyTypeDefault Value
idString
tagStringdiv
cardBooleanfalse
smallBooleanfalse
pillsBooleanfalse
verticalBooleanfalse
bottomBooleanfalse
endBooleanfalse
no-fadeBooleanfalse
no-nav-styleBooleanfalse
no-key-navBooleanfalse
lazyBooleanfalse
content-classString or Array or Object
nav-classString or Array or Object
nav-wrapper-classString or Array or Object
valueNumber

Slots

SlotDescription
tabsAdditional tab buttons without tab content
emptyRenders this slot if no tabs are present

Events

EventArgumentsDescription
input
tab_index - Current selected tab index (0-based index)
Emits when a tab is shown. Used to update the v-model

<b-tab>

Properties

PropertyTypeDefault Value
idString
activeBooleanfalse
tagStringdiv
button-idString
titleString
title-item-classString or Array or Object
title-link-classString or Array or Object
head-htmlString
disabledBooleanfalse
no-bodyBooleanfalse
hrefString#
lazyBooleanfalse

Slots

SlotDescription
titleSlot for custom tab title

Events

EventArgumentsDescription
click
evt - Original event object
Emited when a tab is clicked, or is activated by keyboard navigation

Importing individual Tabs Components

ComponentImport Path
<b-tabs>bootstrap-vue/es/components/tabs/tabs
<b-tab>bootstrap-vue/es/components/tab/tab

Example:

import BTabs from 'bootstrap-vue/es/components/tabs/tabs'
Vue.component('b-tabs', BTabs)

Importing Tabs as a Vue plugin

This plugin includes all of the above listed individual components. Plugins also include any component aliases.

import { Tabs } from 'bootstrap-vue/es/components'
Vue.use(Tabs)