In this article, we will see how to expand/collapse columns in datatable. The Datatables API has a number of methods for attaching child rows to a parent row in the Datatable. This can be used to show additional information about a row, useful for cases where you wish to convey more information about a row than there is space for in the host table.

    So, let's see parent-child rows in jquery datatable, datatables expand/collapse columns, collapse/expand click groups, how to expand/collapse all child rows, datatable collapse column, jquery datatable nested table expand/collapse, child row above parent row on datatable, datatables multiple child rows, jquery datatable expand/collapse rows.

    HTML:

<table id="example" class="display" style="width:100%">
        <thead>
            <tr>
                <th></th>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Salary</th>
            </tr>
        </thead>
        <tfoot>
            <tr>
                <th></th>
                <th>Name</th>
                <th>Position</th>
                <th>Office</th>
                <th>Salary</th>
            </tr>
        </tfoot>
    </table>

    Javascript:

/* Formatting function for row details - modify as you need */
function format(d) {
    // `d` is the original data object for the row
    return (
        '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">' +
        '<tr>' +
        '<td>Full name:</td>' +
        '<td>' +
        d.name +
        '</td>' +
        '</tr>' +
        '<tr>' +
        '<td>Extension number:</td>' +
        '<td>' +
        d.extn +
        '</td>' +
        '</tr>' +
        '<tr>' +
        '<td>Extra info:</td>' +
        '<td>And any further details here (images etc)...</td>' +
        '</tr>' +
        '</table>'
    );
}
 
$(document).ready(function () {
    var table = $('#example').DataTable({
        ajax: '../ajax/data/objects.txt',
        columns: [
            {
                className: 'dt-control',
                orderable: false,
                data: null,
                defaultContent: '',
            },
            { data: 'name' },
            { data: 'position' },
            { data: 'office' },
            { data: 'salary' },
        ],
        order: [[1, 'asc']],
    });
 
    // Add event listener for opening and closing details
    $('#example tbody').on('click', 'td.dt-control', function () {
        var tr = $(this).closest('tr');
        var row = table.row(tr);
 
        if (row.child.isShown()) {
            // This row is already open - close it
            row.child.hide();
            tr.removeClass('shown');
        } else {
            // Open this row
            row.child(format(row.data())).show();
            tr.addClass('shown');
        }
    });
});

    AJAX:

{
  "data": [
    {
      "id": "1",
      "name": "Tiger Nixon",
      "position": "System Architect",
      "salary": "$320,800",
      "start_date": "2011/04/25",
      "office": "Edinburgh",
      "extn": "5421"
    },
    {
      "id": "2",
      "name": "Garrett Winters",
      "position": "Accountant",
      "salary": "$170,750",
      "start_date": "2011/07/25",
      "office": "Tokyo",
      "extn": "8422"
    },
    {
      "id": "3",
      "name": "Ashton Cox",
      "position": "Junior Technical Author",
      "salary": "$86,000",
      "start_date": "2009/01/12",
      "office": "San Francisco",
      "extn": "1562"
    },
    {
      "id": "4",
      "name": "Cedric Kelly",
      "position": "Senior Javascript Developer",
      "salary": "$433,060",
      "start_date": "2012/03/29",
      "office": "Edinburgh",
      "extn": "6224"
    },
    {
      "id": "5",
      "name": "Airi Satou",
      "position": "Accountant",
      "salary": "$162,700",
      "start_date": "2008/11/28",
      "office": "Tokyo",
      "extn": "5407"
    }
  ]
}

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