WAI-ARIA: aria-required (Property)

Description

Indicates that user input is required on the element before a form may be submitted.

For example, if the user needs to fill in an address field, the author will need to set the field’s aria-required attribute to true.

Note: The fact that the element is required is often presented visually (such as a sign or symbol after the widget). Using the aria-required attribute allows the author to explicitly convey to assistive technologies that an element is required.

Unless an exactly equivalent native attribute is available, host languages SHOULD allow authors to use the aria-required attribute on host language form elements that require input or selection by the user.

Browser Compatibility For aria-required

	desktop						mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet
ariaRequired	ChromeFull support81	EdgeFull support81	FirefoxNo supportNo	Internet ExplorerNo supportNo	OperaFull support68	SafariFull support12.1	WebView AndroidFull support81	Chrome AndroidFull support81	Firefox for AndroidNo supportNo	Opera AndroidFull support58	Safari on iOSFull support12.2	Samsung InternetFull support13.0

Screen Reader Support For aria-required

Expectation	JAWS			Narrator	NVDA			Orca	TalkBack	VoiceOver (iOS)	VoiceOver (macOS)
	Chrome	Edge	Firefox	Edge	Chrome	Edge	Firefox	Firefox	Chrome	Safari	Safari
MUST convey the “false” value	supported	supported	supported	supported	supported	supported	supported	supported	supported	supported	supported
MUST convey the “true” value	supported	supported	supported	partial (2/3)	supported	supported	supported	partial (1/3)	none	supported	supported

Example

HTML Example

<div class="text">
<label id="tp1-label" for="first">First Name:</label>
<input type="text" id="first" name="first" size="20"
aria-labelledby="tp1-label"
aria-describedby="tp1"
aria-required="false" />
<div id="tp1" class="tooltip"
role="tooltip"
aria-hidden="true">Your first name is optional</div>
</div>

Characteristics

Related Concepts

• HTML required

Used in Roles

• combobox
• gridcell
• listbox
• radiogroup
• spinbutton
• textbox
• tree

Inherits into Roles

• columnheader
• rowheader
• searchbox
• treegrid

Value

•  True/False
  Value representing either true or false. The default value for this value type is False, unless otherwise specified.
• False (default)
  • User input is not necessary to submit the form.
• True:
  • Users need to provide input on an element before a form is submitted.

Semantic HTML

Use the HTML “required” attribute.

<input type=”text” required>
—-
<select required>
<option value="">None</option>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>

Reference

• W3C (opens new window)
• A11Y Support
• MDN Web Docs