- From: Steve Faulkner <faulkner.steve@gmail.com>
- Date: Fri, 9 May 2014 09:32:22 +0100
- To: HTMLWG WG <public-html@w3.org>
- Cc: Marco Zehe <marco.zehe@googlemail.com>
- Message-ID: <CA+ri+V=+Bi=Vmnq0sta5wOH2xnjU7uCCS=AQLvY5cgWa7ECg9Q@mail.gmail.com>
discussion starter: HTML5 has the outline algorithm [1] (as yet largely unimplemented ) which effectively removes the semantic meaning of numeric headings. example: <body> <h6> does not mean a heading level 6 it means a heading level 1 conversely: <body> <section /> <section /> <section /> <section /> <section /> <section /> <h1> does not mean a heading level 1 it means a heading level 7 It has been suggested by marco zehe from Mozilla [3] that the only clean way forward for the outline algorithm is this: > > 1. Leave h1 to h6 alone as they always were. h1 through h6 are always that > regardless of what they are nested in. > > 2. Introduce a new element named "heading" or the like that is the only > element > participating in the outline algorithm. it gets a level of 1 by default, > and a level of > greater than 1 depending on which section elements it is nested in. So a > section heading gets > a level of 2, a section section heading gets a level of 3 etc. And the > calculation of the > levels is the sole responsibility of the browser, indicating the > calculated level as an > implicit aria-level attribute. Styling could then be based off the section > nesting or > the proposed DOM attribute that would correspond to implicit aria-level. > > This is the only way where there is a clean choice for web developers: Use > the limited 1 to 6 heading levels, > or choose a more free and modern way of structuring documents, and the > browser takes care of communicating > the level to assistive technologies. > A custom <heading> element [2] designed to explore how such a feature could work in practice is in development. [1] http://www.w3.org/html/wg/drafts/html/master/sections.html#outlines [2] https://github.com/ThePacielloGroup/w3c-heading#w3c-heading [3] https://www.w3.org/Bugs/Public/show_bug.cgi?id=25003#c18 -- Regards SteveF HTML 5.1 <http://www.w3.org/html/wg/drafts/html/master/>
Received on Friday, 9 May 2014 08:33:30 UTC