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442 lines
13 KiB
Markdown
442 lines
13 KiB
Markdown
<!-- catalog-only-start --><!-- ---
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name: Tabs
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dirname: tabs
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-----><!-- catalog-only-end -->
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<catalog-component-header image-align="start">
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<catalog-component-header-title slot="title">
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# Tabs
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<!-- no-catalog-start -->
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<!--*
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# Document freshness: For more information, see go/fresh-source.
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freshness: { owner: 'lizmitchell' reviewed: '2025-05-20' }
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tag: 'docType:reference'
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*-->
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<!-- go/md-tabs -->
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<!-- [TOC] -->
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<!-- external-only-start -->
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**This documentation is fully rendered on the
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[Material Web catalog](https://material-web.dev/components/tabs/)**
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<!-- external-only-end -->
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<!-- no-catalog-end -->
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[Tabs](https://m3.material.io/components/tabs)<!-- {.external} --> organize groups of
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related content that are at the same level of hierarchy.
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</catalog-component-header-title>
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<img
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class="hero"
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src="images/tabs/hero.webp"
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alt="Media gallery screen with tabs labeled 'Video', 'Photos', and 'Audio'.">
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</catalog-component-header>
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* [Design article](https://m3.material.io/components/tabs) <!-- {.external} -->
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* [API Documentation](#api)
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* [Source code](https://github.com/material-components/material-web/tree/main/tabs)
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<!-- {.external} -->
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## Types
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1. [Primary tabs](#primary-tabs)
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1. [Secondary tabs](#secondary-tabs)
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<!-- catalog-only-start -->
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<!--
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## Interactive Demo
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{% playgroundexample dirname=dirname %}
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-->
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<!-- catalog-only-end -->
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## Usage
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Tabs contain multiple primary or secondary tab children. Use the same type of
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tab in a tab bar.
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-primary-tab>Video</md-primary-tab>
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<md-primary-tab>Photos</md-primary-tab>
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<md-primary-tab>Audio</md-primary-tab>
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</md-tabs>
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<md-tabs>
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<md-secondary-tab>Birds</md-secondary-tab>
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<md-secondary-tab>Cats</md-secondary-tab>
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<md-secondary-tab>Dogs</md-secondary-tab>
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</md-tabs>
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```
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### Selection
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Add an `active` attribute to change which tab is selected.
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```html
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<md-tabs>
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<md-primary-tab>Video</md-primary-tab>
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<md-primary-tab active>Photos</md-primary-tab>
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<md-primary-tab>Audio</md-primary-tab>
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</md-tabs>
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```
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To observe changes to tab selections, add an event listener to `<md-tabs>`,
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listening for the `change` event.
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```ts
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tabs.addEventListener('change', (event: Event) => {
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if (event.target.activeTabIndex === 2) {
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// ... perform logic only if index of selected item is 2.
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}
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});
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```
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### Icons
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Tabs may optionally show an icon.
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Icons communicate the type of content within a tab. Icons should be simple and
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recognizable.
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-primary-tab>
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<md-icon slot="icon">piano</md-icon>
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Keyboard
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</md-primary-tab>
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<md-primary-tab>
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<md-icon slot="icon">tune</md-icon>
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Guitar
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</md-primary-tab>
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</md-tabs>
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```
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Tabs may optionally show icons without a label.
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-primary-tab>
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<md-icon slot="icon">piano</md-icon>
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</md-primary-tab>
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<md-primary-tab>
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<md-icon slot="icon">tune</md-icon>
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</md-primary-tab>
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</md-tabs>
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```
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## Primary tabs
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<!-- go/md-primary-tab -->
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Primary tabs are placed at the top of the content pane under a top app bar. They
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display the main content destinations.
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-primary-tab>
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<md-icon slot="icon">piano</md-icon>
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Keyboard
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</md-primary-tab>
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<md-primary-tab>
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<md-icon slot="icon">tune</md-icon>
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Guitar
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</md-primary-tab>
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</md-tabs>
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```
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### Inline icons
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Primary tabs can show their icons inline, like secondary tabs.
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-primary-tab inline-icon>
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<md-icon slot="icon">piano</md-icon>
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Keyboard
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</md-primary-tab>
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<md-primary-tab inline-icon>
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<md-icon slot="icon">tune</md-icon>
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Guitar
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</md-primary-tab>
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</md-tabs>
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```
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## Secondary tabs
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<!-- go/md-secondary-tab -->
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Secondary tabs are used within a content area to further separate related
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content and establish hierarchy.
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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<!-- Need to add catalog-include "figures/<component>/usage.html" -->
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```html
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<md-tabs>
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<md-secondary-tab>
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<md-icon slot="icon">flight</md-icon>
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Travel
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</md-secondary-tab>
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<md-secondary-tab>
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<md-icon slot="icon">hotel</md-icon>
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Hotel
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</md-secondary-tab>
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<md-secondary-tab>
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<md-icon slot="icon">hiking</md-icon>
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Activities
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</md-secondary-tab>
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</md-tabs>
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```
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## Accessibility
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Add an
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[`aria-label`](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-label)<!-- {.external} -->
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attribute to `<md-tabs>` and any individual tab whose label needs to be more
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descriptive, such as icon-only tabs.
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```html
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<md-tabs aria-label="Content to view">
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<md-primary-tab aria-label="Photos">
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<md-icon slot="icon">photo</md-icon>
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</md-primary-tab>
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<md-primary-tab aria-label="Videos">
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<md-icon slot="icon">videocam</md-icon>
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</md-primary-tab>
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<md-primary-tab aria-label="Music">
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<md-icon slot="icon">audiotrack</md-icon>
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</md-primary-tab>
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</md-tabs>
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```
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### Tab panels
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Every tab must reference a
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[`role="tabpanel"`](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/tabpanel_role)<!-- {.external} -->
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element with `aria-controls`. Tab panels must be labelled with `aria-label` or
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`aria-labelledby`.
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It's common to reference the panel's tab with `aria-labelledby`.
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```html
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<md-tabs aria-label="Content to view">
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<md-primary-tab id="photos-tab" aria-controls="photos-panel">
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Photos
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</md-primary-tab>
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<md-primary-tab id="videos-tab" aria-controls="videos-panel">
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Videos
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</md-primary-tab>
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<md-primary-tab id="music-tab" aria-controls="music-panel">
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Music
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</md-primary-tab>
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</md-tabs>
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<div id="photos-panel" role="tabpanel" aria-labelledby="photos-tab">
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...
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</div>
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<div id="videos-panel" role="tabpanel" aria-labelledby="videos-tab" hidden>
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...
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</div>
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<div id="music-panel" role="tabpanel" aria-labelledby="music-tab" hidden>
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...
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</div>
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```
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## Theming
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Tabs supports [Material theming](../theming/README.md) and can be customized in
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terms of color, typography, and shape.
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### Primary tab tokens
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Token | Default value
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----------------------------------------- | -------------
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`--md-primary-tab-container-color` | `--md-sys-color-surface`
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`--md-primary-tab-label-text-font` | `--md-sys-typescale-title-small-font`
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`--md-primary-tab-active-indicator-color` | `--md-sys-color-primary`
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`--md-primary-tab-icon-color` | `--md-sys-color-on-surface-variant`
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`--md-primary-tab-container-shape` | `--md-sys-shape-corner-none`
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* [All tokens](https://github.com/material-components/material-web/blob/main/tokens/_md-comp-primary-tab.scss)
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<!-- {.external} -->
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### Primary tab example
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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```html
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<style>
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:root {
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/* System tokens */
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--md-sys-color-surface: #f7faf9;
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--md-sys-color-primary: #005353;
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/* Component tokens */
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--md-primary-tab-label-text-font: cursive, system-ui;
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--md-primary-tab-label-text-size: 0.8em;
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}
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</style>
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<md-tabs>
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<md-primary-tab>Tab 1</md-primary-tab>
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<md-primary-tab>Tab 2</md-primary-tab>
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<md-primary-tab>Tab 3</md-primary-tab>
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</md-tabs>
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```
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### Secondary tab tokens
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Token | Default value
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------------------------------------------- | -------------
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`--md-secondary-tab-container-color` | `--md-sys-color-surface`
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`--md-secondary-tab-label-text-font` | `--md-sys-typescale-title-small-font`
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`--md-secondary-tab-active-indicator-color` | `--md-sys-color-primary`
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`--md-secondary-tab-icon-color` | `--md-sys-color-on-surface-variant`
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`--md-secondary-tab-container-shape` | `--md-sys-shape-corner-none`
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* [All tokens](https://github.com/material-components/material-web/blob/main/tokens/_md-comp-secondary-tab.scss)
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<!-- {.external} -->
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### Secondary tab example
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<!-- no-catalog-start -->
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<!-- Need to add image -->
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<!-- no-catalog-end -->
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```html
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<style>
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:root {
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/* System tokens */
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--md-sys-color-surface: #f7faf9;
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--md-sys-color-primary: #005353;
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/* Component tokens */
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--md-secondary-tab-label-text-font: cursive, system-ui;
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--md-secondary-tab-label-text-size: 0.8em;
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}
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</style>
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<md-tabs>
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<md-secondary-tab>Tab 1</md-secondary-tab>
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<md-secondary-tab>Tab 2</md-secondary-tab>
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<md-secondary-tab>Tab 3</md-secondary-tab>
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</md-tabs>
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```
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<!-- auto-generated API docs start -->
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## API
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### MdTabs <code><md-tabs></code>
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#### Properties
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<!-- mdformat off(autogenerated might break rendering in catalog) -->
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| Property | Attribute | Type | Default | Description |
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| --- | --- | --- | --- | --- |
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| `autoActivate` | `auto-activate` | `boolean` | `false` | Whether or not to automatically select a tab when it is focused. |
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| `activeTabIndex` | `active-tab-index` | `number` | `undefined` | |
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| `tabs` | | `Tab[]` | `undefined` | The tabs of this tab bar. |
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| `activeTab` | | `Tab` | `undefined` | |
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<!-- mdformat on(autogenerated might break rendering in catalog) -->
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#### Methods
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<!-- mdformat off(autogenerated might break rendering in catalog) -->
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| Method | Parameters | Returns | Description |
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| --- | --- | --- | --- |
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| `scrollToTab` | `tabToScrollTo` | `Promise<void>` | Scrolls the toolbar, if overflowing, to the active tab, or the provided tab. |
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<!-- mdformat on(autogenerated might break rendering in catalog) -->
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#### Events
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<!-- mdformat off(autogenerated might break rendering in catalog) -->
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| Event | Type | [Bubbles](https://developer.mozilla.org/en-US/docs/Web/API/Event/bubbles) | [Composed](https://developer.mozilla.org/en-US/docs/Web/API/Event/composed) | Description |
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| `change` | `Event` | Yes | No | Fired when the selected tab changes. The target's `activeTabIndex` or `activeTab` provide information about the selection change. The change event is fired when a user interaction like a space/enter key or click cause a selection change. The tab selection based on these actions can be cancelled by calling preventDefault on the triggering `keydown` or `click` event. |
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<!-- mdformat on(autogenerated might break rendering in catalog) -->
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### MdPrimaryTab <code><md-primary-tab></code>
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#### Properties
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<!-- mdformat off(autogenerated might break rendering in catalog) -->
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| Property | Attribute | Type | Default | Description |
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| --- | --- | --- | --- | --- |
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| `inlineIcon` | `inline-icon` | `boolean` | `false` | Whether or not the icon renders inline with label or stacked vertically. |
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| `isTab` | `md-tab` | `boolean` | `true` | The attribute `md-tab` indicates that the element is a tab for the parent element, `<md-tabs>`. Make sure if you're implementing your own `md-tab` component that you have an `md-tab` attribute set. |
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| `active` | `active` | `boolean` | `false` | Whether or not the tab is selected. |
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| `hasIcon` | `has-icon` | `boolean` | `false` | In SSR, set this to true when an icon is present. |
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| `iconOnly` | `icon-only` | `boolean` | `false` | In SSR, set this to true when there is no label and only an icon. |
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| `selected` | `selected` | `boolean` | `undefined` | |
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<!-- mdformat on(autogenerated might break rendering in catalog) -->
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### MdSecondaryTab <code><md-secondary-tab></code>
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#### Properties
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<!-- mdformat off(autogenerated might break rendering in catalog) -->
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| Property | Attribute | Type | Default | Description |
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| --- | --- | --- | --- | --- |
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| `isTab` | `md-tab` | `boolean` | `true` | The attribute `md-tab` indicates that the element is a tab for the parent element, `<md-tabs>`. Make sure if you're implementing your own `md-tab` component that you have an `md-tab` attribute set. |
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| `active` | `active` | `boolean` | `false` | Whether or not the tab is selected. |
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| `hasIcon` | `has-icon` | `boolean` | `false` | In SSR, set this to true when an icon is present. |
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| `iconOnly` | `icon-only` | `boolean` | `false` | In SSR, set this to true when there is no label and only an icon. |
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| `selected` | `selected` | `boolean` | `undefined` | |
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<!-- mdformat on(autogenerated might break rendering in catalog) -->
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<!-- auto-generated API docs end -->
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