答复: Using ARIA in HTML

Hi Steve:

Thanks for your document.
I am new to a11y, so I spend some time to review and try to understand ARIA in HTML.

Alt is easy for understanding, is just some text will be reading to assist people know what is the image/video/…
But for the role, I feel a little confused, in your “using ARIA in HTML”, if we define role in an element, the element will be change to another kind of element.
For example, <a href=…. Role=”button”>link</a>, so the a element will be change to <button>link</button>.
I cannot understand what’s benefit to change the element to another using role, why?

And I also see that role can also be a class like attribute, like “presentation”, what’s the meaning?

Sorry for so many questions ;)



________________________________
Yang Sun
Email: eric.sun@huawei.com
Huawei Technologies Co., Ltd.
http://www.huawei.com

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发件人: Steve Faulkner [mailto:faulkner.steve@gmail.com]
发送时间: 2012年6月29日 20:23
收件人: HTMLWG WG
抄送: HTML Accessibility Task Force
主题: Using ARIA in HTML

I have posted an intial draft of a document I have been working on which attempts to provide practical advice to developers on what ARIA to use in HTML.

http://dvcs.w3.org/hg/aria-unofficial/raw-file/tip/index.html



My intention is to provide a non normative resource that fills in the gaps in the current HTML5 specification and a document that is more readable (i.e. less jargonist) It does deviate from HTML5 in some of its suggestions, these deviations are based on current implementation realities.

all feedback welcome

--
with regards

Steve Faulkner
Technical Director - TPG

www.paciellogroup.com<http://www.paciellogroup.com> | www.HTML5accessibility.com<http://www.HTML5accessibility.com> | www.twitter.com/stevefaulkner<http://www.twitter.com/stevefaulkner>
HTML5: Techniques for providing useful text alternatives - dev.w3.org/html5/alt-techniques/<http://dev.w3.org/html5/alt-techniques/>
Web Accessibility Toolbar - www.paciellogroup.com/resources/wat-ie-about.html
<http://www.paciellogroup.com/resources/wat-ie-about.html>