React by Patrik

TinyMCE: How to Remove All data-* Attributes with a Custom Button

If you're using TinyMCE in a React app and want to provide users with a way to remove all data-* attributes from their content, you can create a custom toolbar button to do just that.

Why do this?

data-* attributes are often added by frameworks, plugins, or tracking tools. In some cases, you might want to remove these before saving or publishing content, especially for clean, production-ready HTML.

How to Add the Button

You can use TinyMCE’s setup function to add a custom button with a mop-like icon to your toolbar. Here's how:

import { Editor } from '@tinymce/tinymce-react';

function MyEditor({ content, contentChange, onEditorInit }) {
  return (
    <Editor
      value={content}
      onEditorChange={(newValue) => contentChange(newValue)}
      onInit={onEditorInit}
      init={{
        height: 500,
        menubar: false,
        plugins: 'code',
        toolbar: 'undo redo | mopCleaner | bold italic underline | code',
        setup: (editor) => {
          editor.ui.registry.addIcon('mopCleanerIcon', `
            <svg width="24" height="24" viewBox="0 0 24 24">
              <path d="M12 2v14" stroke="currentColor" stroke-width="2"/>
              <path d="M8 16h8l1 4H7l1-4z" fill="currentColor"/>
            </svg>
          `);

          editor.ui.registry.addButton('mopCleaner', {
            icon: 'mopCleanerIcon',
            tooltip: 'Remove all data-* attributes',
            onAction: () => {
              const currentContent = editor.getContent();
              const cleanedContent = currentContent.replace(/\sdata-[\w-]+="[^"]*"/g, '');
              editor.setContent(cleanedContent);
            },
          });
        },
      }}
    />
  );
}

How it works:

The button removes all HTML attributes that match the pattern data-something="value".
It works even when multiple data-* attributes are in a single tag.
You can customize the icon or tooltip to match your app's style.