Web checklist

Checkpoint AA3.2.4: *WCAG 2.0 AA* Consistent Identification

Components that have the same functionality within a set of Web pages are identified consistently.


Rationale

This checkpoint requires consistent identification of functional elements within a Web site or Web application. People with disabilities, as well as non-disabled users, rely on their familiarity with the identical functions that appear on separate Web pages. When identical functions have different labels, a Web site or application can be difficult to use.

This checkpoint also applies to alternative text. If icons or other non-text content has the same functionality on different Web pages, then the alternative text must be the same.

Required development and unit test techniques


To comply with this checkpoint, you must meet all of the following techniques. These techniques are defined in the WCAG 2.0 Level AA Success Criterion 3.2.4 (link resides outside of ibm.com).

  1. Consistent labeling: Use labels, names, and text alternatives consistently for content that has the same functionality.
  2. Required labeling: Follow the techniques for Checkpoint 1.1a and Checkpoint 4.1b in the Web checklist for required labels, names, and text alternatives.

Note: The examples presented in the techniques are not exhaustive. They are meant to illustrate the spirit of this checkpoint.

General examples

  1. Consistent labeling: Use labels, names, and text alternatives consistently for content that has the same functionality.

    To comply with this technique, you must implement all of the following examples.

    General example 1

    A Web site contains a search field on all of its pages. The search field is consistently labeled as Search on all pages.

    General example 2

    Context-sensitive help for a Web site's input fields display by activating an image link. The image link contains an icon that displays a question mark. All context-sensitive help icons on the Web site have alternative text that reads Context help.

    General example 3

    A navigation area appears on each Web site page. A link in the navigation area opens the home page of the site. The link text consistently contains Home on all pages of the Web site.

    Required unit test for general development technique 1

    Manually review the labels, names and text alternatives to confirm they are used consistently throughout the site.

  2. Required labeling: Follow the required techniques for Checkpoint 1.1a and Checkpoint 4.1b of the Web checklist for providing labels, names, and text alternatives.

    Follow the examples in Checkpoint 1.1a and Checkpoint 4.1b of the Web checklist.

    Required unit test for general development technique 2

    Follow the unit test techniques for Checkpoint 1.1a and Checkpoint 4.1b of the Web checklist and test labels, names, and text alternatives.


Recommended development techniques

Although you are not required to implement the recommended development techniques in order to comply with this checkpoint, you should review these techniques because they can improve the accessibility and usability of the application. Refer to the WCAG 2.0 Additional Techniques (Advisory) for Success Criterion 3.2.4 (link resides outside of ibm.com) for a list of techniques and examples.


©2011 IBM Corporation

Last updated May 1, 2011.

W3C Recommendation 11 December 2008: http://www.w3.org/TR/WCAG20/ (link resides outside of ibm.com)
Copyright 1994-2009 W3C (Massachusetts Institute of Technology, European Research Consortium for Informatics and Mathematics, Keio University), All Rights Reserved.