accessibility-checker-engine
Version:
An automated accessibility checking engine for use by other tools
104 lines (88 loc) • 4.48 kB
HTML
<html lang="en-US">
<head>
<title>aria_application_label_unique - Accessibility Checker Help</title>
<script>
RULE_MESSAGES = {"en-US":{"pass":"The element with \"application\" role has a unique label that describes its purpose","fail_label_not_unique":"Multiple elements with \"application\" role do not have unique labels","group":"Each element with \"application\" role must have a unique label that describes its purpose"}};
RULE_ID = "aria_application_label_unique"
</script>
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<link rel="icon" href="https://ibm.com/able/favicon-32x32.png" type="image/png">
<link rel="icon" href="https://ibm.com/able/favicon.svg" type="image/svg+xml">
<link rel="stylesheet" href="../common/help.css" />
<script type="module">
import "https://1.www.s81c.com/common/carbon/web-components/version/v1.35.0/code-snippet.min.js";
import "https://1.www.s81c.com/common/carbon/web-components/version/v1.35.0/list.min.js";
</script>
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
<script src="../common/help.js"></script>
</head>
<body>
<div class="bx--grid toolHelp">
<div class="bx--row">
<div class="bx--col-sm-4 bx--col-md-8 bx--col-lg-16 toolHead">
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<h3 id="ruleMessage"></h3>
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<div class="bx--col-sm-4 bx--col-md-5 bx--col-lg-8 toolMain">
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<mark-down><script type="text/plain">
### Why is this important?
An element with an `"application"` role is a type of ARIA landmark region. When there are multiple application regions, they must have unique labels, so people who use assistive technologies can quickly identify and navigate to each application region.
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<div id="locSnippet"></div>
### What to do
* For each element with `role="application"`, either set the value of the `aria-labelledby` attribute of each application to the `id` value of any visible text that appropriately and uniquely describes that application's purpose
* **Or**, use the `aria-label` attribute to add an invisible, unique, non-empty label to each element with the `"application"` role
For example:
```
<h1 id="weather">Weather portlet</h1>
<div role="application" aria-labelledby="weather">
...
</div>
<div role="application" aria-label="Stock ticker portlet">
...
</div>
```
</script></mark-down>
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<div class="bx--col-sm-4 bx--col-md-3 bx--col-lg-4 toolSide">
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<mark-down><script type="text/plain">
### About this requirement
* [IBM 2.4.1 Bypass Blocks](https://www.ibm.com/able/requirements/requirements/#2_4_1)
* [ARIA6: aria-label to label objects](https://www.w3.org/WAI/WCAG22/Techniques/aria/ARIA6)
* [ARIA13: aria-labelledby to name regions and landmarks](https://www.w3.org/WAI/WCAG22/Techniques/aria/ARIA13)
* [ARIA specification - Application Role](https://www.w3.org/TR/wai-aria-1.2/#application)
### Who does this affect?
* People using a screen reader, including blind, low vision, and neurodivergent people
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