@aurodesignsystem/auro-accordion

Accordion

<auro-accordion> is a HTML custom element for the purpose of toggling the visibility of large content section by clicking on a smaller trigger element.

Transitioning from v1.x to v3.x

The new @aurodesignsystem/auro-accordion element includes breaking changes that are not backwards compatible with earlier releases. Earlier versions may be installed by running the following command.

$ npm i @aurodesignsystem/auro-accordion@1.6.6

Or, by CDN.

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@aurodesignsystem/design-tokens@latest/dist/tokens/CSSCustomProperties.css" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@aurodesignsystem/webcorestylesheets@latest/dist/bundled/essentials.css" />
<script src="https://cdn.jsdelivr.net/npm/@aurodesignsystem/auro-accordion@1.6.6/dist/auro-accordion__bundled.js" type="module"></script>
<script src="https://cdn.jsdelivr.net/npm/@aurodesignsystem/auro-accordion@1.6.6/dist/auro-accordion-group__bundled.js" type="module"></script>

UI development browser support

For the most up to date information on UI development browser support

Install

$ npm i @aurodesignsystem/auro-accordion

Installing as a direct, dev or peer dependency is up to the user installing the package. If you are unsure as to what type of dependency you should use, consider reading this stack overflow answer.

Design Token CSS Custom Property dependency

The use of any Auro custom element has a dependency on the Auro Design Tokens.

CSS Custom Property fallbacks

CSS custom properties are not supported in older browsers. For this, fallback properties are pre-generated and included with the npm.

Any update to the Auro Design Tokens will be immediately reflected with browsers that support CSS custom properties, legacy browsers will require updated components with pre-generated fallback properties.

Define dependency in project component

Defining the component dependency within each component that is using the <auro-accordion> component.

import "@aurodesignsystem/auro-accordion";

Reference component in HTML

<auro-accordion>
  <span slot="trigger">Trigger</span>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
  </p>
  <p>
    Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  </p>
  <p>
    Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
  </p>
  <p>
    Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  </p>
</auro-accordion>

Install bundled assets from CDN

In cases where the project is not able to process JS assets, there are pre-processed assets available for use. See -- auro-accordion__bundled.js for modern browsers. Legacy browsers such as IE11 are no longer supported.

We recommend you load these bundles using differential serving so that the browser only loads the bundle correctly. To accomplish this, the script tag for the modern bundle should have type="module" and the script tag.

Bundle example code

<!-- **NOTE:** Be sure to replace `@latest` in the URL with the version of the asset you want. @latest is NOT aware of any MAJOR releases, use at your own risk. -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@aurodesignsystem/design-tokens@latest/dist/tokens/CSSCustomProperties.css" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@aurodesignsystem/webcorestylesheets@latest/dist/bundled/essentials.css" />
<script src="https://cdn.jsdelivr.net/npm/@aurodesignsystem/auro-accordion@latest/dist/auro-accordion__bundled.js" type="module"></script>

auro-accordion use cases

The <auro-accordion> element should be used in situations where users may:

• Hide/show long sub-content based on headline trigger
• Use is for in-page content only when excessive content length is distracting to the specific experience

API Code Examples

Default auro-accordion

<auro-accordion>
  <span slot="trigger">Trigger</span>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
  </p>
  <p>
    Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
  </p>
  <p>
    Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
  </p>
  <p>
    Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
  </p>
</auro-accordion>

Development

In order to develop against this project, if you are not part of the core team, you will be required to fork the project prior to submitting a pull request.

Please be sure to review the contribution guidelines for this project. Please make sure to pay special attention to the conventional commits section of the document.

Start development environment

Once the project has been cloned to your local resource and you have installed all the dependencies you will need to open a shell session to run the dev server.

$ npm run dev

Open localhost:8000

If running separate sessions is preferred, please run the following commands in individual terminal shells.

$ npm run build:watch

$ npm run serve

API generation

The custom element API file is generated in the build and committed back to the repo with a version change. If the API doc has changed without a version change, author's are to run npm run build:api to generate the doc and commit to version control.

Testing

Automated tests are required for every Auro component. See .\test\auro-accordion.test.js for the tests for this component. Run npm test to run the tests and check code coverage. Tests must pass and meet a certain coverage threshold to commit. See the testing documentation for more details.

Bundled assets

Bundled assets are only generated in the remote and not merged back to this repo. To review and/or test a bundled asset locally, run $ npm run bundler to generate assets.