accessibility-checker-engine
Version:
An automated accessibility checking engine for use by other tools
98 lines (83 loc) • 4.07 kB
HTML
<html lang="en-US">
<head>
<title>label_ref_valid - Accessibility Checker Help</title>
<script>
RULE_MESSAGES = {"en-US":{"pass":"The 'for' attribute for a label referencea a unique non-empty 'id' attribute of a valid element","fail_invalid":"The value \"{0}\" of the 'for' attribute is not the 'id' of a valid element","group":"The 'for' attribute for a label should reference a non-empty, unique 'id' attribute of a valid element"}};
RULE_ID = "label_ref_valid"
</script>
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<!-- Title and messages generated at build time -->
<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">
<!-- Group message injected here -->
<h3 id="ruleMessage"></h3>
<!-- Severity level injected here -->
<div id="locLevel"></div>
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<p id="groupLabel"></p>
</div>
</div>
<div class="bx--row">
<div class="bx--col-sm-4 bx--col-md-5 bx--col-lg-8 toolMain">
<!-- Start main panel -->
<mark-down><script type="text/plain">
### Why is this important?
A `<label>` element is attached to a specific element, such as `<input>` and `<select>`, through the `for` attribute.
When a `<label>` does not reference the corresponding unique `id` in a valid element,
assistive technologies cannot associate the label with the element.
<!-- This is where the code snippet is injected -->
<div id="locSnippet"></div>
### What to do
* Set the value of the `for` attribute to the `id` value of the valid element to be labeled. Make sure the `id` value is unique.
For example:
```
<label id="label2" for="ln1">Last Name</label>
<input type="text" name="lastname" id="ln1" value="enter last name">
```
</script></mark-down>
<!-- End main panel -->
<!-- This is where the rule id is injected -->
<div id="ruleInfo"></div>
</div>
<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 1.3.1 Info and Relationships](https://www.ibm.com/able/requirements/requirements/#1_3_1)
* [H44: Associate text labels with form controls](https://www.w3.org/WAI/WCAG22/Techniques/html/H44)
### Who does this affect?
* People using a screen reader, including blind, low vision, and neurodivergent people
* People with dexterity impairments using voice control
</script></mark-down>
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</div>
</div>
</div>
</body>
</html>