aria-valuemax
NumberDefines the maximum value a range widget can take, forming the upper bound for aria-valuenow. Together with aria-valuemin it lets assistive technologies announce the current value as a percentage of the range. It's required on slider and spinbutton unless the range is open-ended.
Value
Any number, typically within the widget's min/max range.
Used on
<input type="range">
Associated roles
Example
aria-valuemax="…"
<div role="slider" aria-valuemax="100"
aria-valuemin="0" aria-valuenow="60">…</div>References