jQuery UI Library Dialog Creating a Dialog with Tabbed Titlebar

Example

Occasionally, we may want to display dialogs with more than one pane of content. jQuery UI offers tabs that can be used in tandem with a dialog to make this possible. While it may be more common to have tabs within a dialog's content container, this example will demonstrate how to make a list of tabs the titlebar of the dialog.

HTML

<button id="openButton">
  Open Dialog
</button>
<div id="dialog" style="display:none">
  <div class="ui-tabs">
    <ul>
      <li><a href="#tab_1">Tab 1</a></li>
      <li><a href="#tab_2">Tab 2</a></li>
    </ul>
    <div id="tab_1">
      <p>Tab 1 content...</p>
    </div>
    <div id="tab_2">
      <p>Tab 2 content...</p>
    </div>
  </div>
</div>

jQuery

$(document).ready(function() {
  // Options to pass to the jQuery UI Dialog
  var options = {
    position: {
      my: "left top",
      at: "left top",
      of: window
    },
    autoOpen: false
  };

  /* Initialization */
  // Initialize the dialog
  var dialog = $("#dialog").dialog(options);

  // Initialize the tabs
  var tabs = $(".ui-tabs").tabs();

  /* Gather Elements Before Rearrangement */
  var closeButton = dialog.siblings(".ui-dialog-titlebar").find(".ui-dialog-titlebar-close");
  var initialTitlebar = dialog.siblings(".ui-dialog-titlebar");
  
  // Find the list of tabs to make the titlebar, add the ui-dialog-titlebar class, and append the close button
  var tabbedTitlebar = dialog.find(".ui-tabs ul:first").addClass("ui-dialog-titlebar").append(closeButton);

  /* Arranging */
  // Remove the initialTitlebar
  $(initialTitlebar).remove();

  // Create a new .ui-tabs container for the tabbedTitlebar
  var tabbedTitlebarContainer = $("<div>", {
    class: "ui-tabs"
  }).append(tabbedTitlebar);

  // Prepend the tabbedTitlebarContainer to the dialog container
  dialog.parents(".ui-dialog").prepend(tabbedTitlebarContainer);

  /* Show the Dialog */
  dialog.dialog("open");

  var openButton = $("#openButton").button().click(function() {
    dialog.dialog("open");
  });
});

Working example for reference: https://jsfiddle.net/5x4zz681/