# @polymer/iron-a11y-announcer

> A singleton element that simplifies announcing text to screen readers.

Latest version **3.2.0** (published 2021-04-30) · BSD-3-Clause license · 0 weekly downloads

## Install

```sh
npm install @polymer/iron-a11y-announcer
pnpm add @polymer/iron-a11y-announcer
yarn add @polymer/iron-a11y-announcer
bun add @polymer/iron-a11y-announcer
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 3.2.0 |
| Published | 2021-04-30 |
| First published | 2016-02-02 |
| Weekly downloads | 0 |
| License | BSD-3-Clause |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 1 |
| Unpacked size | 17.9 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 26 |
| Author | The Polymer Authors |
| Maintainers | aomarks, emarquez, sorvell, bicknellr, usergenic, polymer-devs, azakus, justinfagnani, tvanderlippe, straversi |
| Keywords | web-components, polymer, a11y, live |

## Links

- npm: https://www.npmjs.com/package/@polymer/iron-a11y-announcer
- Repository: https://github.com/PolymerElements/iron-a11y-announcer
- Homepage: https://github.com/PolymerElements/iron-a11y-announcer#readme
- Issues: https://github.com/PolymerElements/iron-a11y-announcer/issues
- npm.io page: https://npm.io/package/@polymer/iron-a11y-announcer

## Dependencies (1)

- [@polymer/polymer](https://npm.io/package/@polymer/polymer.md) ^3.0.0

## Recent versions

- 3.2.0 (latest) — 2021-04-30
- 3.0.0-pre.20 (next) — 2018-06-23
- 1.0.5-pre.3 (preview) — 2017-01-24
- 3.1.0 — 2020-06-08
- 3.0.2 — 2018-11-12
- 3.0.1 — 2018-09-14
- 3.0.0 — 2018-09-13
- 3.0.0-pre.26 — 2018-09-12
- 3.0.0-pre.25 — 2018-08-29
- 3.0.0-pre.24 — 2018-08-29
- 3.0.0-pre.23 — 2018-08-25
- 3.0.0-pre.22 — 2018-08-25
- 3.0.0-pre.21 — 2018-06-23
- 3.0.0-pre.19 — 2018-05-09
- 3.0.0-pre.18 — 2018-05-09
- … 20 more at https://npm.io/package/@polymer/iron-a11y-announcer/versions

## README

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iron-a11y-announcer.html

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[![Published on NPM](https://img.shields.io/npm/v/@polymer/iron-a11y-announcer.svg)](https://www.npmjs.com/package/@polymer/iron-a11y-announcer)
[![Build status](https://travis-ci.org/PolymerElements/iron-a11y-announcer.svg?branch=master)](https://travis-ci.org/PolymerElements/iron-a11y-announcer)
[![Published on webcomponents.org](https://img.shields.io/badge/webcomponents.org-published-blue.svg)](https://webcomponents.org/element/@polymer/iron-a11y-announcer)

## &lt;iron-a11y-announcer&gt;

`iron-a11y-announcer` is a singleton element that is intended to add a11y
to features that require on-demand announcement from screen readers. In
order to make use of the announcer, it is best to request its availability
in the announcing element.
Note: announcements are only audible if you have a screen reader enabled.

See: [Documentation](https://www.webcomponents.org/element/@polymer/iron-a11y-announcer),
  [Demo](https://www.webcomponents.org/element/@polymer/iron-a11y-announcer/demo/demo/index.html)

## Usage

### Installation
```
npm install --save @polymer/iron-a11y-announcer
```

### In an html file
```html
<html>
  <head>
    <script type="module">
      import {IronA11yAnnouncer} from '@polymer/iron-a11y-announcer/iron-a11y-announcer.js';
      // Initialize the announcer.
      IronA11yAnnouncer.requestAvailability();

      // Note: announcements are only audible if you have a screen reader enabled.
      IronA11yAnnouncer.instance.fire('iron-announce',
          {text: 'Hello there!'}, {bubbles: true});
    </script>
  </head>
</html>
```

### In a Polymer 3 element
```js
import {PolymerElement, html} from '@polymer/polymer';
import {IronA11yAnnouncer} from '@polymer/iron-a11y-announcer/iron-a11y-announcer.js';

class SampleElement extends PolymerElement {
  static get template() {
    return html`
      <button on-click="announce">Announce</button>
    `;
  }
  function attached() {
    IronA11yAnnouncer.requestAvailability();
  }

  // After the `iron-a11y-announcer` has been made available, elements can
  // make announces by firing bubbling `iron-announce` events.
  // Note: announcements are only audible if you have a screen reader enabled.
  function announce() {
    IronA11yAnnouncer.instance.fire('iron-announce',
        {text: 'Hello there!'}, {bubbles: true});
  }
}
customElements.define('sample-element', SampleElement);
```

## Contributing
If you want to send a PR to this element, here are
the instructions for running the tests and demo locally:

### Installation
```sh
git clone https://github.com/PolymerElements/iron-a11y-announcer
cd iron-a11y-announcer
npm install
npm install -g polymer-cli
```

### Running the demo locally
```sh
polymer serve --npm
open http://127.0.0.1:<port>/demo/
```

### Running the tests
```sh
polymer test --npm
```

## Known Issues
This element doesn't work on Firefox (it doesn't read anything in Voice Over), since
`aria-live` has been broken since the Quantum redesign (see the [MDN docs demo](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions))
-- we tested it on Firefox 60, but it doesn't look like a regression, so
it's probably broken on older versions as well.

---
_Source: https://npm.io/package/@polymer/iron-a11y-announcer · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._
