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Usable tables in HTML, VXML

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How to make tables in your HTML and/or VXML application usable, readable for blind users

How to make tables in your HTML and/or VXML application usable, readable for blind users

Published in: Technology, Health & Medicine

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  • 1. Usable Tables4.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 2. Define headers of rows andcolumns The T H element defines a cell that contains header information Correct using ofT H elements causes, that table can be easily readed by the rows and by the columns<thead> <tr> <td>&nbsp;</td> <th>Leden</th> <th>Únor</th> <th>Březen</th> </tr></thead><tbody> <tr> <th>Jablka</th> <td>100</td> <td>125</td> <td>80</td> </tr></tbody> 24.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 3. Scope of header cell• use attributte s c o p e with row or col value• it specifies the set of data cells for which the current header cell provides header information<thead> <tr> <td>&nbsp;</td> <th scope="col">Leden</th> <th scope="col">Únor</th> <th scope="col">Březen</th> </tr></thead><tbody> <tr> <th scope="row">Jablka</th> <td>100</td> <td>125</td> <td>80</td> </tr></tbody> 34.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 4. Summary of table Use attribute summary This attribute provides a summary of the tables purpose and structure for user agents rendering to non-visual media such as speech and Braille.<table summary="Přehled cen jablek, hrušek a švestek za 1.Q roku"> 44.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 5. a b b r attribute should be used to provide an abbreviated form of the cells content<tr> <th scope="row" abbr="Množství jablek">Jablka</th> <td>100</td> <td>125</td> <td>80</td></tr> may be rendered by user agents when appropriate in place of the cells content names should be short since user agents may render them repeatedly speech synthesizers may render the abbreviated headers relating to a particular cell before rendering that cells content. 54.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 6. Don’t use tables for layout! Tables should be used only for structured data – not for layout! Don’t use headers if you do it! Use <div> elements and CSS for layout rather using tables 64.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 7. Complicated nested tables• http://www.w3.org/WAI/wcag-curric/sam45-0.htm 74.2.2008 - Pavel Růžička [MCPD]Product Development Department
  • 8. Table in audio applications 84.2.2008 - Pavel Růžička [MCPD]Product Development Department