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Tastaturkürzel für Barrierefreiheit

Submitted by zwahlendesign on Mon, 2005-11-21 22:01
  • Webdesign

Es gibt wichtige Tastaturkürzel um eine Website in einem üblichen Browser schnell und einfach zu bedienen. Man kann diese auch Barrierefreie Tastaturkürzel nennen. Ein Vorteil für alle Surfer, im spezillen auch für Behinderte Menschen.
Unter shortcuts.html hab ich einige Tastaturkürzel zusammengetragen.

Ziel

Um es dem Benutzer einfach, also zugänglich zu machen ist es gut, die jeweiligen (verfügbaren) Shortcust übersichtlich und möglichst einheiglich auf der Website darstellen lassen zu können. Damit werden diese mehr bekannt und auch wirklich verwendet. Denn damit verringert sich nicht nur der Programmieraufwand für Webdesiger heute und in Zukunft, sonder bietet dem Benutzer einen echten Mehrwert.

Problem

Aus der Tabelle wird ersichtlich, dass bei einigen Browsern wie z.B dem Internet Explorer einige wichtige Tastaturkürzel für die Zugänglichkeit von Websites zu erhöhen ganz fehlen, je nach Browser unterschiedlich ausfallen und dass sie je nach Betriebssystem und Plattform anders aussehen.

Lösung

Mit PHP oder Javascript kann das jeweilig verwendete System erkennt werden und nur die entsprechenden Tastaturkürzel ausgegeben werden. Die serverseitige (PHP) Variante ist ganz klar vorzuziehen, da nicht jeder Javascript aktiviert hat oder je nach Betrieb nicht erlaubt wird.

Spezielle Tastaturkürzel (Access Key)

Bei Access Keys handelt es sich um vom Webdesiger eigens definierte und spezielle Tastaturkürzel mit der "Alt"-Taste und Buchstaben oder Zahlen.

Zukunftsfähig?

Problem: Da viele Browser jedoch bereits viele  Tastaturkürzel mit der Alt-Taste und Buchstaben verwenden, bleiben (meist) nur noch die Zahlen. Diese sind nun aber z.B mit dem Firefox 1.0 auch bereits belegt. Siehe z.B Browser Keyboard Shortcuts - Bug in Firefox for Linux/Mac. Weiteres Beispiel ist der IBM Home Page Reader der für Alt+F1 für die Überschriftenfunktion verwendet.

Gemäss der Bedingungen der BITV 9.5 muss man aber auf jeden Fall Accesskeys verwenden.

BITV-Bedingungen
BITV Priorität Wortlaut der Bedingung
Bedingung 9.5
Prio. 2 Es sind Tastaturkurzbefehle für Hyperlinks, die für das Verständnis des Angebots von entscheidender Bedeutung sind (einschließlich solcher in clientseitigen Imagemaps), Formularkontrollelemente und Gruppen von Formularkontrollelementen bereitzustellen.

Lösung: Dieser Konflikt in Firefox lässt sich noch mit der Verwendung von nur einem Tab lösen. Es bleibt aber die Frage, wann andere Browser solche Tastaturkürzel verwenden und ob Access Keys, angesichts der sehr kleinen Belegung (nur gerade 10 Links), überhaupt noch eine Zukunft haben. Für website-interne Tastaturkürzel sind diese jedoch für die Benutzer sehr hilfreich und für Webdesigern sehr flexibel.

Einheitliche und/oder Anzeige der Access Keys

Problem: Gerade die Flexibilität von Access Keys bringt auch die Möglichkeit für Webdesiger mit sich, alle möglichen Links damit zu belegen. Der User muss dann auf jeder Website unterschiedliche Tastaturkürzel lernen. Denn nur die Tastaturkürzel, die einem bekannt sind, kann man verwenden. Es sei denn, sie werden dem Benutzer ohne lange zu suchen direkt angezeigt. Meist ist dies aber nicht der Fall.

Lösung: Somit muss man sich für einheitliche Access Key im Groben einigen, und/oder sie werden auf der Website (direkt) angezeigt.

Einheitliche Access Keys

?bersicht einiger (wichtigen) website-spezifische Links zur besseren Zugänglichkeit,
Reihenfolge
Die Reihenfolge sollte möglichst logisch strukturiert sein
Bereits belegte Tastaturkürzel mit Zahlen und Assoziationen
Browser shortcuts and associations
Key General (Firefox)
Speziell in Opera Speziell in Mozilla/Netscape
0 0 - Restore Text Size in Firefox
1 F1 - Help, Alt + pos1 - Start page,
"First page"
1 - Previous Tab Ctrl/Cmd+1 Start Navigator
2 2 - Next Tab
F2 - Enter a Web address
Ctrl/Cmd+2 Start Mail & Newsgroups
3 F3 - Find Again / Search F3 - Search F3 - Find Again / Search
4 Alt/Option+F4 Close Window
Ctrl/Cmd+F4- Close Tab
F4 - Select Location Bar in IE
F4 - Bookmarks Ctrl/Cmd+4 Start Composer
5 F5 - Reload Ctrl/Cmd+5 Start Address Book   
6 F6 - Move to Next Frame in Firefox
F6 - Restore Text Size
Ctrl/Cmd+6 Start IRC Chat
7 F7 - Caret Browsing" in Firefox
-
8 -
9  "Last page" 9 - Decrease Text Size
-
Der Link "Top of page" benötigt es in der Regel nicht, da auf gängigen Tastaturen diese Taste "Home" oder "pos1" bereits existiert. Sowie auch alle anderen Navigationstasten wie "Page end", "Back" oder "Forward".
Overview about the definded shortcuts
Accesskey New Standard UK Government WebAIM Mark Pilgrim
Diveintomark.org
b.f-w.d.de
Alt+S - Skip navigation - - -
Alt+0 Help/Info
Access key details Accessibility statement Start page, Home page
Alt+1 Home page Home page Home page Home page Top of page
Alt+2 Skip to content What’s new Skip navigation Skip to main content Next page
Alt+3 Skip to Search Site map Printer-friendly version Previous page
Alt+4 Skip to Navigation Search Search Search box One rubric or rank lower
Alt+5 Sitemap FAQs One rubric or rank higher
Alt+6 ... (free) Help Sitemap
Alt+7 ... (free) Complaints procedure Table of content of this page
Alt+8 ... (free) Terms and conditions Content this page
Alt+9 Contact, Imprint Feedback form Feedback Contact, Imprint

A good web accessible website should have:

  1. Hilfe
  2. Sitemap
  3. Suche
  4. Glossar
  5. Stichwortverzeichnis (Index)
  6. Skip link to navigation
  7. Skip link to content
  8. Kontakt Formular
  9. Impressum

Accesskey suggestion

Accesskey Links
Accesskey Link
Why?
Alt+0 Home page
A start page do not need a name like index.html
Alt+1 Help F1 - Help
Alt+2 Sitemap Sitemap befor Search
Alt+3 Suche F3: Find Again / Search in browser and office software
Alt+4 Glossary / FAQs Glossary after Sitemap and Search
Alt+5 Index/Stichwortverzeichnis Index after Glossary (F5: Reload in Firefox and Microsoft Office)
Alt+6 Skip to Navigation F6: Move to Next Frame in Firefox.
F6: Jump between windows in OpenOffice.org.
Alt+7 Skip to Content
Alt+8 Contact form or
Terms of use or
A contact form is almost the same like Imprint.
Alt+9 Imprint or
Imprint with contact form
Contact form Imprint and Copyright are generally at the end of a website

Accesskeys - Yes or No?

Only the key 3 and 8 are free. Accesskeys - Ja oder Nein?. So, use tabindex.

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  • English English

Thanks for the shortcuts

Submitted by thomr on Mon, 2012-01-23 22:09.

Thanks so much for these short cuts.

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Interesting

Submitted by omnitech on Thu, 2012-01-12 13:43.

Please keep blogging.. the information was very well received..

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Thanks for this post my friend

Submitted by TheGateKeeper on Wed, 2011-12-07 21:59.

Thank you for this very nice post, I really enjoyed looking for this.
I write in a similar style over at my blog.

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mikeshone

Submitted by mikeshone on Tue, 2011-09-06 20:38.

Thanks for this article. I think your article was pretty intriguing. I look forward to read others in the near future.

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fashion design schools

Submitted by sababhto on Thu, 2011-08-25 00:04.

Engrossing article - thanks. I think your article was pretty entertaining. Thank you once more - I will drop by again.

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Never knew that opinions

Submitted by Kevin344 on Mon, 2011-08-22 09:57.

Never knew that opinions could be this varied. Thanks for all the enthusiasm to offer such helpful information here.

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thanks for sharing.chrome

Submitted by eyewear on Sat, 2011-08-20 15:30.

thanks for sharing.

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Good information!! I want to

Submitted by Rose25 on Sun, 2011-08-07 01:28.

Good information!!

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Awesome!

Submitted by JJsmith on Mon, 2011-08-15 15:55.

Quite possibly the most succinct and current info I came across about this subject. Sure pleased that I discovered that site by accident... I’ll probably be subscribing for your feed so that I will get the most current updates. Like the information here.

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Thanks for this!

Submitted by Mesothelioma Lawyers on Sat, 2011-08-06 20:13.

I love this site. This post really captures the essence of our topic here. You nailed it! Thanks.

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great post

Submitted by Setting up a Lo... on Tue, 2011-08-02 23:14.

This was really helpful for me. Thanks for the info!
Next time I need this I'll have it bookmarked.

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re

Submitted by mrspecialist on Tue, 2011-07-05 00:56.

this is really an exciting and informative stuff being published here, I may not be surprised to see the different kind of reactions from peoples as some may like it and some don't ... bt it does not matter to me as I am fan of innovation and always like to see new things happening, no matter watever is the field/ industry or area of life in the world..... I appreciate it and up to some extent it has given me good knowledge as well..... thanks !!!

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very good i thought about it

Submitted by kevsmi123 on Thu, 2011-06-30 11:30.

very good i thought about it and finally i decided it is not commercial.

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hello

Submitted by avatar1111 on Sun, 2011-05-29 16:51.

Damit werden diese mehr bekannt und auch wirklich verwendet.

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Really interesting

Submitted by Anonymous on Thu, 2011-03-24 22:39.

This was really a great article that I have enjoyed to say the least. I really do appreciate everything. Thanks for sharing.

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sonia

Submitted by sonia on Wed, 2011-06-22 13:10.

Thanks for posting this. i really had good time reading this.

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lia james

Submitted by Anonymous on Mon, 2011-03-14 09:43.

I like every post in this blog. Really a nice work has done. I appreciate the blog owner.

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This is cool

Submitted by Anonymous on Sat, 2011-02-05 22:07.

This is a really interesting article that I really do appreciate. Hopefully I can learn more from your valuable experience. Thanks Rebecca Marshal

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Thanks for posting such an

Submitted by Anonymous on Wed, 2011-02-02 06:53.

Thanks for posting such an important article, the information on Accesskey Links was very helpful for me. I was searching for a similar information for some days and it ends here. I look forward for more interesting articles.

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Made for an interesting read.

Submitted by Anonymous on Thu, 2011-03-24 21:49.

Made for an interesting read. thankyou.

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Very useful post, I think it

Submitted by Anonymous on Mon, 2011-01-24 11:21.

Very useful post, I think it will be indeed useful and for my research project, so thank you very much for sharing it.

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Reply

Submitted by Anonymous on Fri, 2011-01-07 09:17.

Thank you for this very useful information.

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I think this stuff will be

Submitted by Anonymous on Wed, 2010-12-15 13:01.

I think this stuff will be useful for my essay writing. Thank you so much!

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Für website-interne

Submitted by rocky110 on Sat, 2011-04-09 07:20.

Für website-interne Tastaturkürzel sind diese jedoch für die Benutzer sehr hilfreich und für Webdesigern sehr flexibel.

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Good information

Submitted by Anonymous on Tue, 2011-03-08 20:03.

This is really very interesting. I find this website so much fun and educational its crazy. I really appreciate everything.

Betty Marsh

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mmm nice sharing. arda

Submitted by delta0x on Sun, 2009-01-18 20:44.

mmm nice sharing.

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Bei Access Keys handelt es

Submitted by Chuvak on Wed, 2008-12-10 10:14.

Bei Access Keys handelt es sich um vom Webdesiger eigens definierte und spezielle Tastaturkürzel mit der "Alt"-Taste und Buchstaben oder Zahlen.

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Thank you for the sensible critique.

Submitted by Anonymous on Wed, 2010-12-22 18:29.

Thank you for the sensible critique. Me and my neighbor were just preparing to do some research about this. We got a grab a book from our local library but I think I learned more from this post. I am very glad to see such great information being shared freely out there.

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Good points marlboro

Submitted by Anonymous on Thu, 2011-03-17 16:07.

Good points

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Thnks very for the great

Submitted by Anonymous on Sun, 2011-02-27 15:51.

Thnks very for the great article. I like your blog and website.

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Thanks

Submitted by Jimmy on Sun, 2008-11-23 11:52.

Very interesting and useful, thanks.

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Great post

Submitted by Anonymous on Tue, 2010-11-09 10:29.

Great post, Mason! A fantastic summary/overview.
Thanks for the work! Keep going!

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Nice post

Submitted by Anonymous on Fri, 2011-03-11 18:04.

Quite possibly the most succinct and current info I came across about this subject. Sure pleased that I discovered that site by accident. I’ll probably be subscribing for your feed so that I will get the most current updates. Like the information here.

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re

Submitted by Anonymous on Mon, 2010-11-22 12:39.

great website i like your blog and also this one post that is really nice post and informative

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