SIA-R82Error message describes invalid form field value
Accessibility requirements
This rule tests conformance of the following accessibility requirements:
Description
This rule checks that text error messages provided when the user completes a form field with invalid values or using an invalid format, identify the cause of the error or how to fix the error.
Applicability
This rule applies to every element in the HTML namespace that has one of the following semantic roles:
checkbox,combobox,listbox,menuitemcheckbox,menuitemradio,radio,searchbox,slider,spinbutton,switchortextbox.
The list of applicable semantic roles is derived by taking all the ARIA 1.1 roles that:
- inherit from the abstract
inputorselectrole, and - do not have a required context role that inherits from the abstract
inputorselectrole.
Expectations
-
Each test target either has no form field error indicators, or at least one of the form field error indicators allows the identification of the related test target, through text, non-text content, or presentation.
A single form field error indicator can be related to multiple test targets. For example, an error message at the top of a form can list all the form fields that are required and are empty.
A single test target can be related to multiple form field error indicators. For example, a text field can have a red border around it, an error icon adjacent to it, an error message below it, and another error message at the top of the form. All of these are error indicators for the same form field.
-
Each test target either has no form field error indicators, or at least one of the form field error indicators describes:
- the cause of the error, or
- how to resolve it,
-
Each test target either has no form field error indicators, or at least one of the form field error indicators describes:
- the cause of the error, or
- how to resolve it,
in text that is included in the accessibility tree or included in the accessible name or accessible description of the test target.
Assumptions
This rule makes no assumptions.
Accessibility support
This rule has no known accessibility support concerns.
Examples
Acknowledgments
This document includes material copied from or derived from https://www.w3.org/WAI/standards-guidelines/act/rules/36b590/. Copyright © 2024 W3C® (MIT, ERCIM, Keio, Beihang).