Dropdown

A dropdown can open a menu or another element when the user clicks the button.

Dropdown documentation

Class names

• component: dropdown
• part: dropdown-content
• placement: dropdown-start, dropdown-center, dropdown-end, dropdown-top, dropdown-bottom, dropdown-left, dropdown-right
• modifier: dropdown-hover, dropdown-open, dropdown-close

Syntax

Popover API:

<button popovertarget="{id}" style="anchor-name:--{anchor}">{button}</button>
<ul class="dropdown" popover id="{id}" style="position-anchor:--{anchor}">{CONTENT}</ul>

The details and summary elements open and close only when the user clicks them:

<details class="dropdown">
  <summary>Button</summary>
  <ul class="dropdown-content">{CONTENT}</ul>
</details>

Rules

• {MODIFIER} is optional. It can include one modifier class name and one placement class name.
• Replace {id} and {anchor} with the same name. Do not use this name for another element.
• The content is not limited to <ul>. It can be a different HTML element.
• For the popover API method, use only a button and dropdown. Do not use dropdown-content.