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Live Regions
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It solves problem
of how to announce content updated by AJAX to screen reader users.
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Does this by
defining sections of document where content is updated dynamically.
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Properties:
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aria-live = off |
polite | assertive | rude (how aggressive should screen reader be in
announcing updates? Can be used with any existing HTML element.)
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aria-atomic = true
| false (read entire live region on change, or only new content?)
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aria-busy = true |
false (can set to true until final part of live region has loaded. Prevents
AT announcing changes before updates complete.)
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aria-relevant =
additions | removals | text | all (what changes are considered relevant?)
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Example: Twitter live update
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