Issue #3248774 - Add Accessibility

Closes #3248774

js/formtips.js

@@ -48,10 +48,10 @@
       // As in Drupal 10: Remove jQuery dependency from the once feature
       // @see: https://www.drupal.org/node/3158256
       $(once('formtips', $descriptions, context)).each(function () {
-        var $formtip = $('<a class="formtip"></a>');
         var $description = $(this);
         var $item = $description.closest('.form-item');
         var descriptionId = $description.attr('id');
+        var $formtip = $('<a class="formtip" aria-labelledby="' + descriptionId + '" href="javascript:void(0);" tabindex="0"></a>');
 
         // If there is no description id, skip.
         if (!descriptionId) {
@@ -120,6 +120,8 @@
 
         $item.addClass('formtips-item');
         $description.toggleClass('formtips-show', false);
+        $description.attr('tabindex', '0');
+        $description.attr('role', 'tooltip');
         $label.append($formtip);
 
         if (formtip_settings.trigger_action === 'click') {