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The aria-relevant attribute is an optional value used to describe what types of changes have occurred to an aria-live region and of which are relevant and should be announced. Any change that is not relevant acts in the same manner it would if the aria-live attribute were set to off.
Aria-relevant is commonly used when a web page contains content which may be updated while viewing the page.
Values
A space-delimited list of one or more of the following values:
- "additions" Insertion of nodes into the live region should be considered relevant.
- "removals" Deletion of nodes should be considered relevant.
- "text" Changes to the textual content of existing nodes should be considered relevant.
- "all" Equivalent to additions removals text.
aria-relevant="additions text" is the default value on a live region.