Allow alt attribute with the span element

# Michael A. Peters (6 days ago)

With images, the alt attribute can and should be used to give a description of an image for users who can not see the image.

With text, some glyphs are pictographs that have a meaning. For example, U+1F502 is a pictograph indicating single loop, but it is meaningless if you can not see it.

Even if screen readers can specify the codepoint and/or map the codepoint to a description (do they?) sometimes fonts define PUA codepoints for pictograph glyphs that are not official.

A span element with a title attribute does not always solve this problem, sometimes the glyph is in a button element that has a title attribute describing what the button will do rather than the what the current state is.

For example, a button may show a single loop indicating the media is currently in single loop mode but have a title attribute specifying that pressing it enables continuous loop mode.

If there was an alt attribute on a span inside the button, screen readers could treat the span with a pictograph the same way it would treat an image child of a button attribute and describe the current pictograph to the end user.

If there is already a solution to this issue, I apologize, I could not find one.

We (er, WhatWG / W3C) could just add alt to the global attribute list too, rather than just span. Or come up with a semantic pictograph element specifically for this (just like we have tt and code).

Thank you for opinions.

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# Jonathan Garbee (6 days ago)

Is there a problem with using aria-label www.w3.org/TR/wai-aria/states_and_properties#aria-label for this

use case? It seems like this should do exactly what you're asking for in the given scenario.

On Fri, Oct 6, 2017 at 11:15 AM, Michael A. Peters <mpeters at domblogger.net>

wrote:

# Michael A. Peters (6 days ago)

Nope, no problem at all. That looks like a simple solution I did not find. Thank you.

# Michael A. Peters (6 days ago)

On 10/06/2017 08:44 AM, Léonie Watson wrote: >

On 06/10/2017 11:26, Michael A. Peters wrote:

Nope, no problem at all. That looks like a simple solution I did not find. Thank you.

Note that you need to provide an explicit role on the span if you use aria-label to provide its accessible name.

I assume if I instead put the aria-label on the button rather than span that contains the pictograph, that would work too without needing a role since it is an actual button.

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