Techniques for WCAG 2.0

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G135: Using the accessibility API features of a technology to expose names and roles, to allow user-settable properties to be directly set, and to provide notification of changes


programming technologies that have standard components that are programmed to interface with accessibility APIs

This technique relates to:


The objective of this technique is to allow assistive technology to understand Web content so that it can convey equivalent information to the user through an alternate user interface.

Sometimes content is not created using markup language but rather using a programming language or tools. In many cases, these technologies have interface components that are already programmed to interface with accessibility APIs. If an author uses these components and fills in the properties (e.g., name, etc) the resulting user interface components in the content will be accessible to assistive technology.


Example 1


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  1. Render content using an accessible User Agent

  2. Use an Accessibility Tool designed for the Accessibility API of the User agent to evaluate each user interface component

  3. Check that name and role for each user interface component are found by the tool.

Expected Results

If this is a sufficient technique for a success criterion, failing this test procedure does not necessarily mean that the success criterion has not been satisfied in some other way, only that this technique has not been successfully implemented and can not be used to claim conformance.

Techniques are Informative

Techniques are informative—that means they are not required. The basis for determining conformance to WCAG 2.0 is the success criteria from the WCAG 2.0 standard—not the techniques. For important information about techniques, please see the Understanding Techniques for WCAG Success Criteria section of Understanding WCAG 2.0.