Set Focus on Expanded Row

by bmarsh123

HTML

<table>
    <thead>
        <tr>
            <th></th>
            <th>First</th>
            <th>Middle</th>
            <th>Last</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td class="expand"><label class="expcol">+</label></td>
            <td>Josh</td>
            <td>S.</td>
            <td>Smith</td>
        </tr>
        <tr class="details" style="display: none;">
            <td colspan="4">
                Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
            </td>
        </tr>
        <tr>
            <td class="expand"><label class="expcol">+</label></td>
            <td>Billy</td>
            <td>O.</td>
            <td>Bob</td>
        </tr>
        <tr class="details" style="display: none;">
            <td colspan="4">
                Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat...

CSS

table {
    width: 80%;
    border: 1px solid #eee;
    border-spacing: 0px;
    text-align: left;
}
td, th {
    border: 1px solid #eee; 
    border-spacing: 0px;
    height: 40px;
    padding-left: 5px;
}
.expand { text-align: center; }
.expcol { cursor: pointer; }
.sortable {
    color: #666;
    cursor: pointer;
    text-decoration: underline;
}
.sortable:hover { color: black; }
.sorted-asc, .sorted-desc  { color: black; }

JavaScript

$(document).ready(function() {
    $('.expcol').click(function() {
        var details = $(this).parent().parent().next(),
            plusminus = '';
        if (details.css('display') == 'none') {
            details.show();
            plusminus = '-';
        } else {
            details.hide();
            plusminus = '+';
        }
        $('.details').not(details).hide();
        $('.expcol').html('+');
        $(this).html(plusminus);
        // Set focus on expanded row
        window.scrollTo(0, details.offset().top - (details.height() / 2));
    });
    
    $('thead th').each(function(column) {
        $(this).addClass('sortable').click(function() {
            var findSortKey = function(cell) { return cell.find('.sort-key').text().toUpperCase() + ' ' + cell.text().toUpperCase(); };
            var sortDirection = $(this).is('.sorted-asc') ? -1 : 1;
            // Get rows with data for sorting
            var rows = $(this).parent().parent().parent().find('tbody tr').get();
            // Loop through rows
            $.each(rows, function(index, row) { row.sortKey = findSortKey($(row).children('td').eq(column)); });
            // Sort rows alphabetically
            rows.sort(function(a, b) {
                if (a.sortKey < b.sortKey) { return -sortDirection; }
                if (a.sortKey > b.sortKey) { return sortDirection; }
                return 0;
            });
            // Add rows in correct order to bottom of table
            $.each(rows, function(index, row) {
                $('tbody').append(row);
                row.sortKey = null;
            });
            // Identify column sort order
            $('th').removeClass('sorted-asc sorted-desc');
            var sortHead = $('th:not(:first-child)').filter(':nth-child(' + (column + 1) + ')');
            sortDirection == 1 ? sortHead.addClass('sorted-asc') : sortHead.addClass('sorted-desc');
            // Identify column to be sorted
           ...