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Sliders and their expected behaviour

for

From: MEJ - Beth Sullivan
Date: Feb 20, 2015 7:01AM

Hello,

For horizontal sliders visually using the left and right arrow keys makes
sense for a keyboard user to change the values.
For screen reader users, is the expectation that the left and right or up
and down keys would work the same way?
Screen reader users wouldn't necessarily know what the orientation of the
slider is, it could be a volume slider like on Windows that visually
displays vertically, or it could be to identify a range and marked up
horizontally.

What are AT users and testers experiences with these slider components?

Thank you,

Beth