focusable selector
Description: Selects elements which can be focused.
- jQuery( ":focusable" )
Some elements are natively focusable, while others require explicitly setting a tab index. In all cases, the element must be visible in order to be focusable.
Elements of the following type are focusable if they are not disabled: input, select, textarea, button, and object. Anchors are focusable if they have an href or tabindex attribute. 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 focusable based solely on their tabindex attribute and visibility.
Note: Elements with a negative tab index are :focusable, but not :tabbable.
Example:
Select focusable elements and highlight them with a red border.
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