Dropdown

<wa-dropdown>

Stable

Since 2.0

Dropdowns display a list of options triggered by a button or other element. They support keyboard navigation, submenus, and checkable items for building menus and context actions.

Dropdowns consist of a trigger and a panel. By default, activating the trigger will expose the panel and interacting outside of the panel will close it.

Dropdowns are designed to work well with dropdown items to provide a list of options the user can select from. However, dropdowns can also be used in lower-level applications. The API gives you complete control over showing, hiding, and positioning the panel.

                  
  Dropdown

    Cut
  
    Copy
  
    Paste
  
    Show images
    Show All Images
    Show Thumbnails
  
  Emoji Shortcuts
  Word Wrap
  
    Delete

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Dropdown</wa-button>

  <wa-dropdown-item>
    <wa-icon slot="icon" name="scissors"></wa-icon>
    Cut
  </wa-dropdown-item>
  <wa-dropdown-item>
    <wa-icon slot="icon" name="copy"></wa-icon>
    Copy
  </wa-dropdown-item>
  <wa-dropdown-item>
    <wa-icon slot="icon" name="paste"></wa-icon>
    Paste
  </wa-dropdown-item>
  <wa-divider></wa-divider>
  <wa-dropdown-item>
    Show images
    <wa-dropdown-item slot="submenu" value="show-all-images">Show All Images</wa-dropdown-item>
    <wa-dropdown-item slot="submenu" value="show-thumbnails">Show Thumbnails</wa-dropdown-item>
  </wa-dropdown-item>
  <wa-divider></wa-divider>
  <wa-dropdown-item type="checkbox" checked>Emoji Shortcuts</wa-dropdown-item>
  <wa-dropdown-item type="checkbox" checked>Word Wrap</wa-dropdown-item>
  <wa-divider></wa-divider>
  <wa-dropdown-item variant="danger">
    <wa-icon slot="icon" name="trash"></wa-icon>
    Delete
  </wa-dropdown-item>
</wa-dropdown>

Examples

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Getting the Selected Item

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When an item is selected, the wa-select event will be emitted by the dropdown. You can inspect event.detail.item to get a reference to the selected item. If you've provided a value for each dropdown item, it will be available in event.detail.item.value.

  
    View
    Enter full screen
    Actual size
    Zoom in
    Zoom out

<div class="dropdown-selection">
  <wa-dropdown>
    <wa-button appearance="filled" slot="trigger" with-caret>View</wa-button>
    <wa-dropdown-item value="full-screen">Enter full screen</wa-dropdown-item>
    <wa-dropdown-item value="actual">Actual size</wa-dropdown-item>
    <wa-dropdown-item value="zoom-in">Zoom in</wa-dropdown-item>
    <wa-dropdown-item value="zoom-out">Zoom out</wa-dropdown-item>
  </wa-dropdown>
</div>

<script>
  const container = document.querySelector('.dropdown-selection');
  const dropdown = container.querySelector('wa-dropdown');

  dropdown.addEventListener('wa-select', event => {
    console.log(event.detail.item.value);
  });
</script>

To keep the dropdown open after selection, call event.preventDefault() in the wa-select event's callback.

Showing Icons

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Use the icon slot to add icons to dropdown items. This works best with icon elements.

                  
  Edit

    Cut
  
    Copy
  
    Paste
  
    Delete

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Edit</wa-button>

  <wa-dropdown-item value="cut">
    <wa-icon slot="icon" name="scissors"></wa-icon>
    Cut
  </wa-dropdown-item>

  <wa-dropdown-item value="copy">
    <wa-icon slot="icon" name="copy"></wa-icon>
    Copy
  </wa-dropdown-item>

  <wa-dropdown-item value="paste">
    <wa-icon slot="icon" name="paste"></wa-icon>
    Paste
  </wa-dropdown-item>

  <wa-dropdown-item value="delete" variant="danger">
    <wa-icon slot="icon" name="trash"></wa-icon>
    Delete
  </wa-dropdown-item>
</wa-dropdown>

Showing Labels & Dividers

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Use any heading, e.g. <h1>–<h6> to add labels and the <wa-divider> element for separators.

                  
  Device

  Type
  Phone
  Tablet
  Desktop

  More options…

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Device</wa-button>

  <h3>Type</h3>
  <wa-dropdown-item value="phone">Phone</wa-dropdown-item>
  <wa-dropdown-item value="tablet">Tablet</wa-dropdown-item>
  <wa-dropdown-item value="desktop">Desktop</wa-dropdown-item>

  <wa-divider></wa-divider>

  <wa-dropdown-item value="more">More options…</wa-dropdown-item>
</wa-dropdown>

Showing Details

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Use the details slot to display details, such as keyboard shortcuts, inside dropdown items.

                  
  Message

    Reply
    ⌘R
  
    Forward
    ⌘F
  
    Move
    ⌘M
  
    Archive
    ⌘A
  
    Delete
    Del

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Message</wa-button>

  <wa-dropdown-item value="reply">
    Reply
    <span slot="details">⌘R</span>
  </wa-dropdown-item>

  <wa-dropdown-item value="forward">
    Forward
    <span slot="details">⌘F</span>
  </wa-dropdown-item>

  <wa-dropdown-item value="move">
    Move
    <span slot="details">⌘M</span>
  </wa-dropdown-item>

  <wa-divider></wa-divider>

  <wa-dropdown-item value="archive">
    Archive
    <span slot="details">⌘A</span>
  </wa-dropdown-item>

  <wa-dropdown-item value="delete" variant="danger">
    Delete
    <span slot="details">Del</span>
  </wa-dropdown-item>
</wa-dropdown>

Checkable Items

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You can turn a dropdown item into a checkable option by setting type="checkbox". Add the checked attribute to make it checked initially. When clicked, the item's checked state will toggle and the dropdown will close. You can cancel the wa-select event if you want to keep it open instead.

  
    View

    Show canvas
    Show grid
    Show source

    Preferences…

<div class="dropdown-checkboxes">
  <wa-dropdown>
    <wa-button appearance="filled" slot="trigger" with-caret>View</wa-button>

    <wa-dropdown-item type="checkbox" value="canvas" checked>Show canvas</wa-dropdown-item>
    <wa-dropdown-item type="checkbox" value="grid" checked>Show grid</wa-dropdown-item>
    <wa-dropdown-item type="checkbox" value="source">Show source</wa-dropdown-item>

    <wa-divider></wa-divider>

    <wa-dropdown-item value="preferences">Preferences…</wa-dropdown-item>
  </wa-dropdown>
</div>

<script>
  const container = document.querySelector('.dropdown-checkboxes');
  const dropdown = container.querySelector('wa-dropdown');

  dropdown.addEventListener('wa-select', event => {
    if (event.detail.item.type === 'checkbox') {
      // Checkbox
      console.log(event.detail.item.value, event.detail.item.checked ? 'checked' : 'unchecked');
    } else {
      // Not a checkbox
      console.log(event.detail.item.value);
    }
  });
</script>

When a checkable option exists anywhere in the dropdown, all items will receive additional padding so they align properly.

Destructive Items

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Add variant="danger" to any dropdown item to highlight that it's a dangerous action.

                  
  Project

    Share
  
    Preferences
  
  Danger zone

    Archive
  
    Delete

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Project</wa-button>

  <wa-dropdown-item value="share">
    <wa-icon slot="icon" name="share"></wa-icon>
    Share
  </wa-dropdown-item>

  <wa-dropdown-item value="preferences">
    <wa-icon slot="icon" name="gear"></wa-icon>
    Preferences
  </wa-dropdown-item>

  <wa-divider></wa-divider>

  <h3>Danger zone</h3>

  <wa-dropdown-item value="archive">
    <wa-icon slot="icon" name="archive"></wa-icon>
    Archive
  </wa-dropdown-item>

  <wa-dropdown-item value="delete" variant="danger">
    <wa-icon slot="icon" name="trash"></wa-icon>
    Delete
  </wa-dropdown-item>
</wa-dropdown>

Placement

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The preferred placement of the dropdown can be set with the placement attribute. Note that the actual position may vary to ensure the panel remains in the viewport.

                  
    File formats
    
  PDF Document
  Word Document
  Excel Spreadsheet
  PowerPoint Presentation
  Plain Text
  JSON File

<wa-dropdown placement="right-start">
  <wa-button appearance="filled" slot="trigger">
    File formats
    <wa-icon slot="end" name="chevron-right"></wa-icon>
  </wa-button>

  <wa-dropdown-item value="pdf">PDF Document</wa-dropdown-item>
  <wa-dropdown-item value="docx">Word Document</wa-dropdown-item>
  <wa-dropdown-item value="xlsx">Excel Spreadsheet</wa-dropdown-item>
  <wa-dropdown-item value="pptx">PowerPoint Presentation</wa-dropdown-item>
  <wa-dropdown-item value="txt">Plain Text</wa-dropdown-item>
  <wa-dropdown-item value="json">JSON File</wa-dropdown-item>
</wa-dropdown>

Distance

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The distance from the panel to the trigger can be customized using the distance attribute. This value is specified in pixels.

                  
  Edit

  Cut
  Copy
  Paste

  Find
  Replace

<wa-dropdown distance="30">
  <wa-button appearance="filled" slot="trigger" with-caret>Edit</wa-button>

  <wa-dropdown-item>Cut</wa-dropdown-item>
  <wa-dropdown-item>Copy</wa-dropdown-item>
  <wa-dropdown-item>Paste</wa-dropdown-item>

  <wa-divider></wa-divider>

  <wa-dropdown-item>Find</wa-dropdown-item>
  <wa-dropdown-item>Replace</wa-dropdown-item>
</wa-dropdown>

Offset

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The offset of the panel along the trigger can be customized using the skidding attribute. This value is specified in pixels.

                  
  Edit

  Cut
  Copy
  Paste

  Find
  Replace

<wa-dropdown skidding="30">
  <wa-button appearance="filled" slot="trigger" with-caret>Edit</wa-button>

  <wa-dropdown-item>Cut</wa-dropdown-item>
  <wa-dropdown-item>Copy</wa-dropdown-item>
  <wa-dropdown-item>Paste</wa-dropdown-item>

  <wa-divider></wa-divider>

  <wa-dropdown-item>Find</wa-dropdown-item>
  <wa-dropdown-item>Replace</wa-dropdown-item>
</wa-dropdown>

Submenus

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To create submenus, nest dropdown items inside of a dropdown item and assign slot="submenu" to each one. You can also add dividers as needed.

  
    Export

      Documents
      PDF
      Word Document
    
      Spreadsheets
      
        Excel Formats
        Excel (.xlsx)
        Excel 97-2003 (.xls)
        CSV (.csv)
      
        Other Formats
        OpenDocument (.ods)
        Tab-separated (.tsv)
        JSON (.json)
      
      Apple Numbers
    
      Options
      Compress files
      Include metadata
      Password protect

<div class="dropdown-submenus">
  <wa-dropdown>
    <wa-button appearance="filled" slot="trigger" with-caret>Export</wa-button>

    <wa-dropdown-item>
      Documents
      <wa-dropdown-item slot="submenu" value="pdf">PDF</wa-dropdown-item>
      <wa-dropdown-item slot="submenu" value="docx">Word Document</wa-dropdown-item>
    </wa-dropdown-item>

    <wa-dropdown-item>
      Spreadsheets
      <wa-dropdown-item slot="submenu">
        Excel Formats
        <wa-dropdown-item slot="submenu" value="xlsx">Excel (.xlsx)</wa-dropdown-item>
        <wa-dropdown-item slot="submenu" value="xls">Excel 97-2003 (.xls)</wa-dropdown-item>
        <wa-dropdown-item slot="submenu" value="csv">CSV (.csv)</wa-dropdown-item>
      </wa-dropdown-item>

      <wa-dropdown-item slot="submenu">
        Other Formats
        <wa-dropdown-item slot="submenu" value="ods">OpenDocument (.ods)</wa-dropdown-item>
        <wa-dropdown-item slot="submenu" value="tsv">Tab-separated (.tsv)</wa-dropdown-item>
        <wa-dropdown-item slot="submenu" value="json">JSON (.json)</wa-dropdown-item>
      </wa-dropdown-item>

      <wa-dropdown-item slot="submenu" value="numbers">Apple Numbers</wa-dropdown-item>
    </wa-dropdown-item>

    <wa-divider></wa-divider>

    <wa-dropdown-item>
      Options
      <wa-dropdown-item slot="submenu" type="checkbox" value="compress">Compress files</wa-dropdown-item>
      <wa-dropdown-item slot="submenu" type="checkbox" checked value="metadata">Include metadata</wa-dropdown-item>
      <wa-dropdown-item slot="submenu" type="checkbox" value="password">Password protect</wa-dropdown-item>
    </wa-dropdown-item>
  </wa-dropdown>
</div>

<script>
  const container = document.querySelector('.dropdown-submenus');
  const dropdown = container.querySelector('wa-dropdown');

  dropdown.addEventListener('wa-select', event => {
    console.log(event.detail.item.value);
  });
</script>

Dropdown items that have a submenu will not dispatch the wa-select event. However, items inside the submenu will, unless they also have a submenu.

As a UX best practice, avoid using more than one level of submenu when possible.

Disabling Items

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Add the disabled attribute to any dropdown item to disable it.

                  
  Payment method

  Cash
  Personal check
  Credit card
  Gift card

<wa-dropdown>
  <wa-button appearance="filled" slot="trigger" with-caret>Payment method</wa-button>

  <wa-dropdown-item value="cash">Cash</wa-dropdown-item>
  <wa-dropdown-item value="check" disabled>Personal check</wa-dropdown-item>
  <wa-dropdown-item value="credit">Credit card</wa-dropdown-item>
  <wa-dropdown-item value="gift-card">Gift card</wa-dropdown-item>
</wa-dropdown>

Importing

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If you're using the autoloader or a hosted project, components load on demand — no manual import needed. To cherry-pick a component manually, use one of the following snippets.

CDN

npm

Self-Hosted

React

Import this component directly from the CDN:

import 'https://ka-f.webawesome.com/[email protected]/components/dropdown/dropdown.js';

After installing Web Awesome via npm, import this component:

import '@awesome.me/webawesome/dist/components/dropdown/dropdown.js';

If you're self-hosting Web Awesome, import this component from your server:

import './webawesome/dist/components/dropdown/dropdown.js';

To import this component for React 18 or below, use the following code:

import WaDropdown from '@awesome.me/webawesome/dist/react/dropdown/index.js';

Slots

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Learn more about using slots.

Name	Description
(default)	The dropdown's items, typically `<wa-dropdown-item>` elements.
`trigger`	The element that triggers the dropdown, such as a `<wa-button>` or `<button>`.

Attributes & Properties

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Learn more about attributes and properties.

Name	Description	Reflects
`css`	One or more CSSResultGroup to include in the component's shadow root. Host styles are automatically prepended. Type `CSSResultGroup \| undefined` Default `[sizeStyles, styles]`
`distance` `distance`	The distance of the dropdown menu from its trigger. Type `number` Default `0`
`open` `open`	Opens or closes the dropdown. Type `boolean` Default `false`
`placement` `placement`	The placement of the dropdown menu in reference to the trigger. The menu will shift to a more optimal location if the preferred placement doesn't have enough room. Type `'top' \| 'top-start' \| 'top-end' \| 'bottom' \| 'bottom-start' \| 'bottom-end' \| 'right' \| 'right-start' \| 'right-end' \| 'left' \| 'left-start' \| 'left-end'` Default `'bottom-start'`
`size` `size`	The dropdown's size. Type `'xs' \| 's' \| 'm' \| 'l' \| 'xl' \| 'small' \| 'medium' \| 'large'` Default `'m'`
`skidding` `skidding`	The offset of the dropdown menu along its trigger. Type `number` Default `0`

Events

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Learn more about events.

Name	Description
`wa-after-hide`	Emitted after the dropdown has been hidden.
`wa-after-show`	Emitted after the dropdown has been shown.
`wa-hide`	Emitted when the dropdown is about to hide.
`wa-select`	Emitted when an item in the dropdown is selected.
`wa-show`	Emitted when the dropdown is about to show.

CSS custom properties

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Learn more about CSS custom properties.

Name	Description
`--hide-duration`	The duration of the hide animation.
`--show-duration`	The duration of the show animation.

CSS parts

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Learn more about CSS parts.

Name	Description	CSS selector
`base`	The component's host element.	`::part(base)`
`menu`	The dropdown menu container.	`::part(menu)`

Dependencies

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This component automatically imports the following elements. Sub-dependencies, if any exist, will also be included in this list.

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Dropdown

Examples

Getting the Selected Item

Showing Icons

Showing Labels & Dividers

Type

Showing Details

Checkable Items

Destructive Items

Danger zone

Placement

Distance

Offset

Submenus

Disabling Items

Importing

Slots

Attributes & Properties

Events

CSS custom properties

CSS parts

Dependencies

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