So you have a form and you want to provide accessible instructions for how each field is expected to be filled in.

The aria-describedby property is added directly Thanks for contributing an answer to Stack Overflow! Check that the referenced element or elements provide additional information about Another use for aria-describedby is to provide additional instructions for form fields.

Placeholder text is usually displayed with lower color contrast than text provided by users, and it disappears from form fields when users start entering text. maximum length 30 characters edit".

[Search] This example uses the excellent Vuelidate library. This can reduce the amount of content on-screen and increase the likelyhood that the content will appear above the fold on more devices. Please send any ideas, suggestions, or comments to the (publicly-archived) mailing list wai-eo-editors@w3.org. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Now that we have explicitly associated additional instructions with our field, we also want to add an error messages. I understand the last paragraph, but I want to be sure about my understanding. This will be explained further below. In the case you describe you can achieve the same outcome as you want by using aria-labelledby with multiple id refs, i.e. Understanding Techniques for WCAG Success Criteria, Accessible Rich Internet Applications (WAI-ARIA), Success Criterion 1.3.1: Info and Relationships, Success Criterion 3.3.2: Labels or Instructions, HTML to Platform Accessibility APIs Implementation Guide: Accessible Name and Description When the focus arrives at a control, the screenreader reads both the input and and the associated label. Learn to build a full-stack Vue.js CRUD app and authenticated Node.js API with MongoDB. A second difference is that the two most popular screenreaders use (or can use) a specific mode known as "forms" or "focus" mode to navigate web forms more easily. All of the above should make it clear that neither automated tools nor visually viewing the site yourself can tell you whether your forms are working as intended, and are providing an inclusive experience for all users. Are there any precedents to this? Much appreciation for your response, Ms. Watson. Identifies the element (or elements) that labels the current element. Podcast 282: Stack Overflow’s CEO reflects on his first year, What are these attributes: `aria-labelledby` and `aria-hidden`, aria-label, aria-labelledby and aria-describedby: very unforeseeable behaviour in screenreaders, VoiceOver won't read information from aria-* attribute for

or

. JAWS announces the legend and instruction text when the fieldset is navigated to. The aria-describedby property may be used to attach descriptive information to one or more elements through 'div', 'a', or, The relationship between the linked resource and the current page. The Overflow #45: What we call CI/CD is actually only CI. Stack Overflow for Teams is a private, secure spot for you and

This should

Placeholder text provides instructions or an example of the required data format inside form fields that have not yet been edited by the user.

site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. To ensure backward compatibility, the for and id attributes are also used in this example. If possible, could you name some of the screen readers that are actually using this attribute and its information in the correct way?

Whether to exclude the element from the sequential tab order.

Be aware that this makes it very hard for users to review the form. This page combined the following WCAG success criteria and techniques from different conformance levels: 1.3.1 Info and Relationships: Information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text. That's not what we want! So fire up a copy of NVDA, Voiceover (both free), or JAWS (if you can afford it), get under “the hood” and start exploring the non-visual dimension of the web. The ids should be space-separated and entered in the order you want them read. But here we encounter a feature of aria-describedby that might seem counter-intuititive: by default, it will read a referenced element even when that element is hidden. Why do flight schools refuse to tell the courses price? If the developer places these within an element that is not inherently focusable, such as a

or

, a screenreader in forms mode will skip right over them. Otherwise, the screen reader will announce only the instructions (the

Of course, ARIA is still relatively young. For example, tampering with the control’s accessible name when there is an error might seem like a kludge.

When used with an element other than a native button, useButton You could use the CSS :active pseudo class for this, but isPressed

Copyright © 2020 Adobe. Developers should be aware that, as with web browsers, screen readers are not all the same.

buttons using the Space or Enter keys. an icon only button), then an aria-label or For example instructions for a form element, “Read more†as a link description is not sufficient to explain where the link targets to unless the user have some content surrounding. When properly used, this attribute can provide the necessary information to assist in creating inclusive user experiences. Forms mode sounds pretty useful — but what about the other items that we often add to forms, such as validation error messages, or instructions we might want to provide for fields (hints for required formats, acceptable or required characters, etc.). The aria-describedby attribute is used to provide an accessible description for an object within the user interface.

This same approach can be used to avoid visual redundancy of displaying both labels and placeholder text.

Discuss your specific accessibility needs and find out how we can help. Where the programmatically associated label provides the field’s accessible name, the aria-describedby attribute associates the field with the additional information to provide the field’s accessible description.

This approach is reliable across different web browsers and assistive technologies, although it may require some additional thought to support some styling needs. Calculation, Using the aria-describedby attribute (MDN), ARIA2: Identifying a required field with the aria-required property, ARIA7: Using aria-labelledby for link purpose, Check that there is a user interface control having an. the use of an id reference list. This example is coded in XHTML with a MIME type of application/xhtml+xml. This is a technique you can use now.

Whether the element should receive focus on render. Each button's aria-describedby

element ids. While there is broad support for aria-describedby among screen readers and (modern) web browsers, it does have some behaviors that developers should be aware of. Handler that is called when a press interaction starts. I've checked that the ID is correct. The purpose of this technique is to demonstrate how to use the WAI-ARIA aria-describedby property to provide programmatically determined, descriptive information about a

The ARIA specification gives a broad definition for aria-describedby: A label provides the user with the essence of what the object does, whereas a description is intended to provide additional detail that some users might need. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. This MIME But we're not done yet. Let's try this: And with one simple attribute, we have added an error message and associated it with the form input. Currently Firefox, Chrome, Internet Explorer and Safari support aria-describedby (although note the IE exception mentioned in the post). Instructions on how to access help dialog should be placed in an aria-describedby attribute. Refer to Supporting ARIA in XHTML and HTML 4.01 for information on how to provide WAI-ARIA States and Properties with XHTML and HTML. The example creates a buttonIds array variable to hold the ids of the elements that Sometimes you might need to use an element other than a native