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Applies to content using image-based submit buttons.
This technique relates to:
For input elements of type 'image', the alt
attribute of the
input
element is used to provide a functional label. This label indicates
the button's function, but does not attempt to describe the image. The label is
especially important if there are multiple submit buttons on the page that each lead to
different results.
The input
element is used to create many kinds of form controls. Although
the HTML and XHTML DTDs permits the alt
attribute on all of these, it should be used
only on image submit buttons. User agent support for this attribute on other types of
form controls is not well defined, and other mechanisms are used to label these
controls.
An input
element with an alt
attribute
Example Code:
<form action="http://example.com/prog/text-read" method="post">
<input type="image" name="submit" src="button.gif" alt="Submit" />
</form>
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For all input elements that have a type attribute value of "image", check for the presence of an alt attribute.
Check that the alt attribute indicates the button's function.
#1 and #2 are true
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.