RE: Question: testing for non-unique id values SC 4.1.1

Ø  But it says “in content implemented using markup languages”. If I implement content using javascript to create a useful DOM tree, am I using markup?   Also, what is “markup content”?  :)

I’d read the phrase “in content implemented using markup languages” used to simply specify which technologies are applicable and which ones are not.  I don’t think it was intended to say that it only applies to the source and not the DOM.  I’d say the id part applies to the DOM as well as element nesting and was very surprised to hear your interpretation that it was not.  Most accessibility testing tools check the DOM for duplicate ids because it’s an easy test to do from the DOM.  Testing the source from a page is more difficult because it requires getting the serialized DOM before the browser has cleaned it up – this is what is needed for some of the other tests such as opening and closing elements, etc..  This requires getting that serialized DOM and putting it through the validator in a secure way.

Jonathan

Jonathan Avila
Chief Accessibility Officer
SSB BART Group
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From: Andrew Kirkpatrick [mailto:akirkpat@adobe.com]
Sent: Thursday, September 29, 2016 7:03 PM
To: David MacDonald
Cc: White, Jason J; Jonathan Avila; w3c-wai-gl@w3.org
Subject: Re: Question: testing for non-unique id values SC 4.1.1

 I don't think the phrase "...in content USING markup languages..."  is the same as "In markup content ..."

But it says “in content implemented using markup languages”. If I implement content using javascript to create a useful DOM tree, am I using markup?

Also, what is “markup content”?  :)

AWK