##<iron-a11y-announcer>
iron-a11y-announcer
is a singleton element that is intended to add a11y to features that require on-demand announcement from screen readers. In order to make use of the announcer, it is best to request its availability in the announcing element.
Example:
Polymer({ is: 'x-chatty', attached: function() { // This will create the singleton element if it has not // been created yet: Polymer.IronA11yAnnouncer.requestAvailability(); } });
After the iron-a11y-announcer
has been made available, elements can make announces by firing bubbling iron-announce
events.
Example:
this.fire('iron-announce', { text: 'This is an announcement!' }, { bubbles: true });
Note: announcements are only audible if you have a screen reader enabled.