修改功能

public/js/rich-editor.js

@@ -31,6 +31,24 @@
     instance.textarea.value = fieldValue(instance.editor);
   }
 
+  function makeToolbarAccessible(toolbar) {
+    var labelButtons = function () {
+      Array.prototype.forEach.call(toolbar.querySelectorAll('button[data-tooltip]'), function (button) {
+        if (!button.getAttribute('aria-label')) button.setAttribute('aria-label', button.getAttribute('data-tooltip'));
+      });
+    };
+
+    labelButtons();
+    if (root.MutationObserver) {
+      new root.MutationObserver(labelButtons).observe(toolbar, {
+        childList: true,
+        subtree: true,
+        attributes: true,
+        attributeFilter: ['data-tooltip']
+      });
+    }
+  }
+
   function createRichEditor(target, options) {
     var textarea = findTextarea(target);
     var settings = options || {};
@@ -79,6 +97,7 @@
         config: Object.assign({ toolbarKeys: toolbarKeys }, settings.toolbarConfig || {}),
         mode: settings.mode || 'default'
       });
+      makeToolbarAccessible(toolbar);
     } catch (error) {
       host.remove();
       return null;