ariavaluemax

ariavaluemax is commonly used informally to refer to the ARIA attribute aria-valuemax, which is part of the WAI-ARIA specification. aria-valuemax defines the upper bound of the value range exposed by a UI widget to assistive technologies. It is used with widgets that implement numeric ranges, such as sliders (role="slider") or meters (role="meter" or progressbar), and is typically paired with aria-valuemin and aria-valuenow.

The attribute indicates the maximum value that the widget can take. The value is numeric and should be kept in sync with the actual state of the control. When the widget changes, updates to aria-valuenow (and, if applicable, aria-valuetext) should reflect the current value and its meaning for users relying on screen readers.

Usage notes and examples: For a slider, a typical markup might include role="slider" aria-valuemin="0" aria-valuemax="100" aria-valuenow="42" and optionally aria-valuetext="forty-two." For a gauge or meter, aria-valuemin and aria-valuemax define the scale, with aria-valuenow indicating the current reading.

Accessibility considerations: aria-valuemax is most effective when used with properly labeled controls and when keyboard interaction is supported. Where possible, native elements like input type="range" offer built-in accessibility; for custom widgets, ARIA attributes should be kept in sync with the widget’s state and tested with assistive technologies.