jQuery Datatables responsive example

HTML

<script src="//code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.2/themes/base/jquery-ui.css">
<link rel="stylesheet" href="//cdn.datatables.net/1.10.1/css/jquery.dataTables.css">
<script src="//cdn.datatables.net/1.10.1/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/responsive/1.0.0/css/dataTables.responsive.css">
<script src="//cdn.datatables.net/responsive/1.0.0/js/dataTables.responsive.js"></script>
<table id="example" class="display" cellspacing="0" width="100%">
    <thead>
        <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
        </tr>
    </thead>
    <tfoot>
        <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
        </tr>
    </tfoot>
    <tbody>
        <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>2011/04/25</td>
            <td>$320,800</td>
        </tr>
        <tr>
            <td>Garrett Winters</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>63</td>
            <td>2011/07/25</td>
            <td>$170,750</td>
        </tr>
        <tr>
            <td>Ashton Cox</td>
            <td>Junior Technical Author</td>
            <td>San Francisco</td>
            <td>66</td>
            <td>2009/01/12</td>
            <td>$86,000</td>
        </tr>
        <tr>
            <td>Cedric Kelly</td>
            <td>Senior Javascript Developer</td>
            <td>Edinburgh</td>
            <td>22</td>
            <td>2012/03/29</td>
            <td>$433,060</td>
        </tr>
        <tr>
           ...

CSS

table th:nth-child(3), td:nth-child(3) {
    display: none;
}

JavaScript

$(document).ready(function () {

    var draw = true;

    var pageLen = 10;

    var originalPage = 0;
    var originalPageLen = pageLen;

    var table = $('#example').DataTable({
        "pageLength": pageLen,
        "preDrawCallback": function (settings) {
            if (!draw) {
                draw = true;
                return false; // cancel draw
            }
        }
    });

    table.on('page.dt length.dt', function (e, settings) {
        if (!confirm("Are you sure?")) {
            draw = false;

            // Reset the current page and current page length
            settings._iDisplayStart = originalPage;
            settings._iDisplayLength = originalPageLen;
            $('[name="example_length"]').val(originalPageLen);

        } else {
            originalPage = settings._iDisplayStart;
            originalPageLen = settings._iDisplayLength;

        }
    });

});