The plugin shows how to build a plugin with popup to add something like tags.

    Click the add button on the toolbar and add tags or select tags in the content and edit them.


    <!DOCTYPE html>
            <title>Article Editor</title>
            <meta charset="utf-8">
            <!-- css -->
            <link rel="stylesheet" href="/your-article-dist-path/article-editor.css" />
            <!-- element -->
            <textarea id="entry">...</textarea>
            <!-- js -->
            <script src="/your-article-dist-path/article-editor.js"></script>
            <script src="/your-article-dist-path/plugins/tags.js"></script>
            <!-- call -->
            ArticleEditor('#entry', {
                plugins: ['tags'],
                css: '/your-article-dist-path/',
                custom: {
                    css: '/your-article-dist-path/plugins/tags/tags.min.css'