Question

I am new to JavaScript/jQuery. I have the following HTML code that’s automatically generated by framework.

<tr class="alternate-row">
    <td>17 July, 2012</td>
    <td>AM Shipment</td>
    <td>Generated</td>
    <td>
        <form method="post" action="" id="ListTruckSheets_o_7" class="basic-form" onsubmit="javascript:submitFormDisableSubmits(this)" name="ListTruckSheets_o_7">//I have the name of this form.
            <input type="hidden" name="shipmentId"  value="10310" id="ListTruckSheets_shipmentId_o_7">
            <input type="hidden" name="Report" id="truckSheet_o_7" onclick="javascript:setSelectedRoute(this, 10310);">
            <input type="hidden" name="abstractReport" id="routeAbstract_o_7" onclick="javascript:setSelectedRoute(this, 10310);">
            <input type="hidden" name="milkDeliverySchedule" id="deliverySchedule_o_7"  onclick="javascript:setSelectedRoute(this, 10310);">
            <input type="hidden" name="cancelShipment" id="ListTruckSheets_cancelShipment_o_7">
        </form>
        <td>
            <a class="buttontext" href="/myportal/control/KVGenerateTruckSheet.txt?shipmentId=10310&amp;reportTypeFlag=trucksheet"  target="_blank" onclick="javascript:setSelectedRoute(this, 10310);" title="Report">Truck Sheet Report</a>
        </td>
        <td>
            <a class="buttontext" href="/myportal/control/KVGenerateTruckSheet.txt?shipmentId=10310&amp;reportTypeFlag=abstract" target="_blank" onclick="javascript:setSelectedRoute(this, 10310);" title="Abstract Report">Route Abstract Report</a>
        </td>
        <td>
            <a class="buttontext" href="/myportal/control/MilkDeliveryScheduleReport.txt?hipmentId=10310&amp;reportTypeFlag=milkDeliverySchedule" target="_blank" onclick="javascript:setSelectedRoute(this, 10310);" title="Milk Delivery Schedule">Delivery Schedule</a>
        </td>
        <td>
            <form method="post" action="/myportal/control/cancelLMSShipment" target="_blank"    onsubmit="javascript:submitFormDisableSubmits(this)" name="ListTruckSheets_o_7_0_o_cancelShipment">
                <input name="shipmentId" value="10310" type="hidden">
            </form>
            <a class="buttontext" href="javascript:document.ListTruckSheets_o_7_0_o_cancelShipment.submit()">Cancel</a>
        </td>
</tr>

Using onclick I have called a JavaScript function which gets the url and add a parameter to it. I have the name or Id of the form(‘ListTruckSheets_o_7’). Using form name or Id I need to find the parent tr and identify the right td I want and set parameter to its url. This is the code I am currently messing with.

function setSelectedRoute(existingUrl, shipmentId) {
     var form = $("input[value=" + shipmentId + "]").parent(); //formName: ListTruckSheets_o_7
     var routeId = form.find("option:selected").text();
     var resultUrl = existingUrl + "&facilityId=" + routeId;
     $('.buttontext').attr('href', resultUrl); // this is setting resultUrl to all the .buttontext class elements but I need to set resultUrl to only specific selected td.
}

So, may be, I need to find the parent tr and get back to the specific td and set resultUrl to it. I have no idea how to do it. I hope I am clear with my question.

Answer 1

You can test this:

form
  .closest('tr')   // go parent tr of form
  .find('.specific_selected_td') // find td, here specific_selected_td is 
                                 // assumed class to selected td
                                 // you may have something different 
  .find('a')  // find anchor tag within that specific td
  .attr('href', resultUrl); // set href

After edit

Change

$('.buttontext').attr('href', resultUrl); 

to

$(existingUrl).attr('href', resultUrl);

Here, existingUrl refers to the clicked a.