Description: Selects elements which the user can focus via tabbing.
jQuery( ":tabbable" )
Some elements are natively tabbable, while others require explicitly setting a positive tab index. In all cases, the element must be visible in order to be tabbable.
Elements of the following type are tabbable if they do not have a negative tab index and are not disabled:
object. Anchors are focusable if they have an
href or positive
area elements are focusable if they are inside a named map, have an
href attribute, and there is a visible image using the map. All other elements are tabbable based solely on their
tabindex attribute and visibility.
Note: Elements with a negative tab index are
:focusable, but not
Select tabbable elements and highlight them with a red border.