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    Html Editor

    Toolbar Customization

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    This demo shows how to add a custom control to the toolbar. The Show markup button opens a popup that displays the HtmlEditor’s output markup.

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    $(() => { let popupInstance; const editorInstance = $('.html-editor').dxHtmlEditor({ value: markup, toolbar: { items: [ 'undo', 'redo', 'separator', { name: 'header', acceptedValues: [false, 1, 2, 3, 4, 5], }, 'separator', 'bold', 'italic', 'strike', 'underline', 'separator', 'alignLeft', 'alignCenter', 'alignRight', 'alignJustify', 'separator', { widget: 'dxButton', options: { text: 'Show markup', stylingMode: 'text', onClick() { popupInstance.show(); }, }, }, ], }, }).dxHtmlEditor('instance'); popupInstance = $('#popup').dxPopup({ showTitle: true, title: 'Markup', onShowing() { $('.value-content').text(editorInstance.option('value')); }, }).dxPopup('instance'); });
    <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.2.3/css/dx.light.css" /> <script src="https://unpkg.com/devextreme-quill@1.5.18/dist/dx-quill.min.js"></script> <script src="https://cdn3.devexpress.com/jslib/22.2.3/js/dx.all.js"></script> <script src="data.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div class="html-editor"></div> <div id="popup"> <div class="value-content"></div> </div> </div> </body> </html>
    .dx-htmleditor-content img { vertical-align: middle; padding-right: 10px; }
    const markup = ` <h2> <img src="../../../../images/widgets/HtmlEditor.svg" alt="HtmlEditor"> Formatted Text Editor (HTML Editor) </h2> <br> <p>DevExtreme JavaScript HTML Editor is a client-side WYSIWYG text editor that allows its users to format textual and visual content and store it as HTML or Markdown.</p> <p>Supported features:</p> <ul> <li>Inline formats: <ul> <li><strong>Bold</strong>, <em>italic</em>, <s>strikethrough</s> text formatting</li> <li>Font, size, color changes (HTML only)</li> </ul> </li> <li>Block formats: <ul> <li>Headers</li> <li>Text alignment</li> <li>Lists (ordered and unordered)</li> <li>Code blocks</li> <li>Quotes</li> </ul> </li> <li>Custom formats</li> <li>HTML and Markdown support</li> <li>Mail-merge placeholders (for example, %username%)</li> <li>Adaptive toolbar for working images, links, and color formats</li> <li>Image upload: drag-and-drop images onto the form, select files from the file system, or specify a URL.</li> <li>Copy-paste rich content (unsupported formats are removed)</li> <li>Tables support</li> </ul> `;