Part 4 - An accessible web Flashcards
when audio is present on a web page what should it be accompanied by to achieve accessibility
this should be accompanied by a transcript so that screen readers and even search engines can interpret what is being said
to accompish this we use:
1. <.table></.table> - define a table
2. <.tr></.tr> - define a row in said table
3. <.th></.th> - define that a cell is a table header
4. <.td></.td> - define that a cell contains table data
what 4 html tags can
create a simple table
which users benefit from a website built with accessibility
this places emphasise on those with mental or physical disabilities however. this also provide benefits for:
* the elderly
* those with temporary disabilities (such as a broken arm)
* those who are not disabled (speech recognition)
this can be placed in a html document using
<.audio></.audio>
how is audio placed into a html document
describe the W3C / WAI
Web Content Accessibility Guidelines (WCAG) 2
this defines standards and guidelines about the content of a web page itself including:
* natural information such as text, images, and sounds
* code or markup that defines structure, presentation
* etc.
this html tag creates an unordered (bullet point) list
describe the html tag
<.ul></.ul>
this includes standards and guidelines for implementing accessibility into user agents such as:
* browsers
* browser extensions
* media players
* readers
* other applications that render web content
describe the W3C / WAI
User Agent Accessibility Guidelines (UAAG)
what is
semantic markup
this is markup that desribes what the element actually is and its purpose
example
<.div> - gives no indication of what it could contain
<.nav> - tells the user agent that this is a navigation bar
how is audio placed into a html document
this can be placed in a html document using
<.audio></.audio>
this sets the background color of the selected element(s)
describe the css property
background-color
this defines standards and guidelines that provide accessibility in authoring tools such as html editors so that:
* make the authoring tools themselves accessible, so that people with disabilities can create web content, and
* help authors create more accessible web content.
describe the W3C / WAI
Authoring Tool Accessibility Guidelines (ATAG)
describe the html tag
<.ul></.ul>
this html tag creates an unordered (bullet point) list
describe the <.img> attribute
longdesc
this img attribute provides a hyperlink to a detailed description of the image
describe the
understandable
category from the
Web Content Accessibility Guidelines (WCAG) 2
W3C describes this as:
Information and the operation of user interface must be understandable.
this means that users must be able to understand and interpret any content that is displayed to them as well as understand how to interact with content and functionality
describe the css property
background-color
this sets the background color of the selected element(s)
this img attribute provides a hyperlink to a detailed description of the image
describe the <.img> attribute
longdesc
this can be used to create list items in an unordered list or an ordered list
describe the html tags
<.li></.li>
the World Wide Web Consortium (W3C) answers this by stating:
Web accessibility means that websites, tools, and technologies are designed and developed so that people with disabilities can use them.
according to the World Wide Web Consortium (W3C)
what does accessibility mean
this should be accompanied by a transcript so that screen readers and even search engines can interpret what is being said
when audio is present on a web page what should it be accompanied by to achieve accessibility
this is a World Wide Web Consortium (W3C) initiative that develops:
* guidelines which are widely regarded as the international standard for web accessibility
* support materials to help understand and implement web accessibility
* resources, through international collaboration
(source)
what is the
W3C’s Web Accessibility Initiative (WAI)
describe the
operable
category from the
Web Content Accessibility Guidelines (WCAG) 2
W3C describes this as:
User interface components and navigation must be operable.
this means that anything that is rendered must be functional and accessible to all
values for this <.img> attribute include:
* an id to another element
* an absolute URL
* a relative URL
what 3 values can be given to the <.img>
longdesc attribute
what 3 values can be given to the <.img>
longdesc attribute
values for this <.img> attribute include:
* an id to another element
* an absolute URL
* a relative URL
to
meet UK government accessibility requirements
what 4 things must a digital service meet
to meet this a digital service must:
* meet level AA of theWeb Content Accessibility Guidelines (WCAG 2.1)as a minimum
* work on the most commonly usedassistive technologies- including screen magnifiers, screen readers and speech recognition tools
* include disabled people inuser research
* have anaccessibility statementthat explains how accessible the service is - you need to publish this when the service moves into public beta
describe the W3C / WAI
Authoring Tool Accessibility Guidelines (ATAG)
this defines standards and guidelines that provide accessibility in authoring tools such as html editors so that:
* make the authoring tools themselves accessible, so that people with disabilities can create web content, and
* help authors create more accessible web content.
name 5 hints that are given by the W3C that can help increase the websites operability
these include:
* Make all functionality available from akeyboard.
* Give usersenough timeto read and use content.
* Do not use content that causesseizuresor physical reactions.
* Help usersnavigate and find content.
* Make it easier to useinputs other than keyboard.
W3C describes this as:
Content must be robust enough that it can be interpreted by by a wide variety of user agents, including assistive technologies.
this includes past, present and upcoming technologies
describe the
robust
category from the
Web Content Accessibility Guidelines (WCAG) 2
describe the
title attribute
this attribute defines some extra information about an element.
The value of the this attribute will be displayed as a tooltip when you mouse over the element