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    Html Editor

    Toolbar Customization

    The HtmlEditor supports toolbar customization. Specify an array of items in the toolbar object. You can choose from a list of predefined items or add a custom item. In this demo, the custom Show markup button opens a popup that displays the value of HtmlEditor.

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    window.onload = function() { var editorValue = ko.observable(), visiblePopup = ko.observable(false); var viewModel = { valueContent: ko.observable(), htmlEditorOptions: { value: editorValue, 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: function() { visiblePopup(true); } } } ] } }, popupOptions: { showTitle: true, title: "Markup", onShowing: function() { this.valueContent(editorValue()); }, visible: visiblePopup } }; ko.applyBindings(viewModel, document.getElementById("demo")); };
    <!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> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.light.css" /> <script src="https://unpkg.com/devextreme-quill/dist/dx-quill.min.js"></script> <script src="https://cdn3.devexpress.com/jslib/21.1.4/js/dx.all.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 data-bind="dxHtmlEditor: htmlEditorOptions"> <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>Insert images as a link or base64 (drag and drop images to convert them to base64)</li> <li>Copy-paste rich content (unsupported formats are removed)</li> <li>Tables support</li> </ul> </div> <div data-bind="dxPopup: popupOptions"> <div class="value-content" data-bind="text: valueContent"></div> </div> </div> </body> </html>
    .dx-htmleditor-content img { vertical-align: middle; padding-right: 10px; }