JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.0/themes/ui-lightness/jquery-ui.css">
<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.min.js"></script>
<div class="demo">

<div id="dialog-form" title="Create new user">
    <p class="validateTips">All form fields are required.</p>

    <form id="d-form">
    <fieldset>
        <label for="name">Name</label>
        <input type="text" name="name" id="name" class="required" />
        <label for="email">Email</label>
        <input type="text" name="email" id="email" value="" class="text ui-widget-content ui-corner-all required" />
        <label for="password">Password</label>
        <input type="password" name="password" id="password" value="" class="text ui-widget-content ui-corner-all" />
    </fieldset>
    </form>
</div>


<div id="users-contain" class="ui-widget">
    <h1>Existing Users:</h1>
    <table id="users" class="ui-widget ui-widget-content">
        <thead>
            <tr class="ui-widget-header ">
                <th>Name</th>
                <th>Email</th>
                <th>Password</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>John Doe</td>
                <td>john.doe@example.com</td>
                <td>johndoe1</td>
            </tr>
        </tbody>
    </table>
</div>
<button id="create-user">Create new user</button>

</div><!-- End demo -->



<div class="demo-description">
<p>Use a modal dialog to require that the user enter data during a multi-step process.  Embed form markup in the content area, set the <code>modal</code> option to true, and specify primary and secondary user actions with the <code>buttons</code> option.</p>
</div><!-- End demo-description -->

CSS

body { font-size: 62.5%; }
        label, input { display:block; }
        input.text { margin-bottom:12px; width:95%; padding: .4em; }
        fieldset { padding:0; border:0; margin-top:25px; }
        h1 { font-size: 1.2em; margin: .6em 0; }
        div#users-contain { width: 350px; margin: 20px 0; }
        div#users-contain table { margin: 1em 0; border-collapse: collapse; width: 100%; }
        div#users-contain table td, div#users-contain table th { border: 1px solid #eee; padding: .6em 10px; text-align: left; }
        .ui-dialog .ui-state-error { padding: .3em; }
        .validateTips { border: 1px solid transparent; padding: 0.3em; }

* { font-family: Verdana; font-size: 96%; }
label { width: 10em; float: left; }
label.error { float: none; color: red; padding-left: .5em; vertical-align: top; }
p { clear: both; }
.submit { margin-left: 12em; }
em { font-weight: bold; padding-right: 1em; vertical-align: top; }

JavaScript

$(function() {
        // a workaround for a flaw in the demo system (http://dev.jqueryui.com/ticket/4375), ignore!
        $( "#dialog:ui-dialog" ).dialog( "destroy" );

         $( "#d-form" ).validate();   
                 
        
        
        $( "#dialog-form" ).dialog({
            autoOpen: false,
            height: 300,
            width: 350,
            modal: true,
            buttons: {
                "Create an account": function() {
                    bValid =  $("#d-form").valid();
                    if (bValid ){
                        $( "#users tbody" ).append( "<tr>" +
                            "<td>" +  $( "#name" ).val() + "</td>" + 
                            "<td>" + $( "#email" ).val() + "</td>" + 
                            "<td>" + $( "#password" ).val() + "</td>" +
                        "</tr>" ); 
                        $( this ).dialog( "close" );
                }
                    
                },
                Cancel: function() {
                    $( this ).dialog( "close" );
                }
            },
            close: function() {
                allFields.val( "" ).removeClass( "ui-state-error" );
            }
        });


        $( "#create-user" )
            .button()
            .click(function() {
                $( "#dialog-form" ).dialog( "open" );
            });
    });