HTML5 and CSS3, Second Edition

Referenced in Tip 14, Providing Navigation Hints with ARIA Roles, on page

93

aria-live [<div aria-live="polite">]

Identifies a region that updates automatically, possibly by Ajax. [F3.6

(Windows), S4, IE8]

Referenced in Tip 15, Creating an Accessible Updatable Region, on page

98

aria-atomic [<div aria-live="polite"aria-atomic="true">]

Identifies whether the entire contents of a live region should be read, or

just the elements that changed should be read. [F3.6 (Windows), S4, IE8]

Referenced in Tip 15, Creating an Accessible Updatable Region, on page

98

<scope> [<th scope="col">Time</th>]

Associates a table header with columns or rows of the table. [All browsers]

Referenced in Tip 16, Improving Table Accessibility, on page 104

<caption> [<caption>Thisis a caption</caption>]

Creates a caption for a table. [All browsers]

Referenced in Tip 16, Improving Table Accessibility, on page 104

aria-describedby [<tablearia-describedby="summary">]

Associates a description with an element. [F3.6 (Windows), S4, IE8]

Referenced in Tip 16, Improving Table Accessibility, on page 104

A1.6 Multimedia

<canvas> [<canvas><p>Alternativecontent</p></canvas>]

Supports creation of vector-based graphics via JavaScript. [C4, F3, S3.2,

IE9, O10.1, iOS3.2, A2]

Referenced in Tip 17, Drawing a Logo on the Canvas, on page 112, and Tip

18, Graphing Statistics with RGraph, on page 120

<svg> [<svg><!--XML content--></svg>]

Supports creation of vector-based graphics via XML. [C4, F3, S3.2, IE9,

O10.1, iOS3.2, A2]

Referenced in Tip 19, Creating Vector Graphics with SVG, on page 126

<audio> [<audiosrc="drums.mp3"></audio>]

Plays audio natively in the browser. [C4, F3.6, S3.2, IE9, O10.1, iOS3, A2]

Appendix 1. Features Quick Reference • 256

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