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ACCESSIBILITY &
                        UI DEVELOPMENT

                           Charlie Perrins




Friday, 18 January 13
postoffice.co.uk




Friday, 18 January 13
Enough waffle
     • Accessibility requirements !=
       constraints on complexity or beauty
     • Accessibility ‘tips’ are often
       just good coding practice
     • Be prepared to accommodate
       changes to your markup habits
     • Automated testing also benefits


                                             3

Friday, 18 January 13
Keyboard navigation




Friday, 18 January 13
Document heading order




                                      5

Friday, 18 January 13
:hover, :focus, and :active




Friday, 18 January 13
tabindex




Friday, 18 January 13
tabindex




Friday, 18 January 13
tabindex




Friday, 18 January 13
tabindex




Friday, 18 January 13
display: none;




Friday, 18 January 13
Display: none?
     • Control the focus of your document
            – It’s OK to use display:none to hide your
              content if you correctly control the focus so
              that the next element in the tab order is the
              right content for the user in context.




Friday, 18 January 13
BIG text




                                   13

Friday, 18 January 13
BIG text




                                   14

Friday, 18 January 13
:pseudo or not :pseudo?




Friday, 18 January 13
Arrow keys




Friday, 18 January 13
Why abstract?




Friday, 18 January 13
A few references
     • Accessible JS tools
            – http://hanshillen.github.com/jqtest
     • Chromevox
            – http://www.chromevox.com/
     • ARIA
            – http://www.w3.org/TR/wai-aria




Friday, 18 January 13

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Accessibility & UI Development