Unselect unknown selectable

Question

I have a table thats devided logically in 2 halves. I will have to select only half of a row as in the image.

Now if I choose a different "half" row, I need to deselect the previous one. How would I do that? My code is here:

<tr class="line1">
    <td width="10" class="td3523" onclick="selectme('3523');">
        <input type="radio" name="selattendance" id="tr3523" onClick="setEditDelete(3523)"/>
    </td>
    <td width="100" class="td3523" onclick="selectme('3523');">2012-11-19</td>
    <td width="125" class="td3523" onclick="selectme('3523');">
        <table width="100%" cellpadding="0" cellspacing="0" style="border: 0;padding: 0;border-collapse: collapse">
            <tr> 
                <td style="width: 50%;padding-right: 10px;border: 0" align="right" valign="middle">22:54</td>
                <td style="width: 20%;border: 0">     <a href="#" onclick="loadPic('attendanceimages/39286a0a6b45cae9f116b11882f36046.jpg','2012-11-19','2012-11-19','add','','In','22:54:04','22:54:04');"><img src="images/punchimg.png"></a>
                </td>
                <td style="width: 20%;border: 0">&nbsp;</td>
            </tr>
        </table>
    </td>
</tr>

When I click on any td, all tds with the same ID get selected using this code:

function selectme(id) {
    $('.td' + id).toggleClass("ui-selected");
}

I guess I need to put another line removing this class from previously selected tds. How would I do that? Thanks.

Answer 1

Give your <td>-s another class say tdclss then use it in your function to remove ui-selected class.

function selectme(id) {
  $('.tdclss').removeClass("ui-selected");
  $('.td' + id).toggleClass("ui-selected");
}

Answer 2

One approach:

$('input:radio').change(
    function(){
        // caching the jQuery $(this) object
        var that = $(this);
            that
                // moves up to the closest ancestor table element
                .closest('table')
                // finds the '.selected' elements within that table
                .find('.selected')
                // removes the 'selected' class from those elements.
                .removeClass('selected');
            that
                // moves to the parent td element
                .parent()
                // selects subsequent siblings *until* it finds
                // an element that matches the selector
                .nextUntil($('td:has("input:radio")'))
                // adds back the current td element to the collection
                .andSelf()
                // adds the 'selected' class
                .addClass('selected');
    });​

JS Fiddle demo.​

References:

• addClass().
• andSelf().
• closest().
• find().
• :has() selector.
• nextUntil().
• parents().

Answer 3

Using several fields with the same ID is asking for trouble sooner or later. You can use class attributes to group the cells, or you can (probably) use a <span> to group them (although I must admit, I have never tried a <span> within a <tr>).