range constant

String const range

The range role is an abstract role. It must not be used by web authors. It is the superclass for structural roles for elements that accept a value within a range of values, including the meter role, progressbar and slider. For these three, consider using the

See: developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/range_role

Implementation

static const String range = 'range';