如何根据下拉菜单中的选择隐藏表格行

Question

I have a dropdown menu that I would like to hide when France is selected in a dropdown menu in another row. I would like to hide the entire row so that County and the dropdown menu are hidden. Below is the CSS, JS that I have tried, and a link to the same in JSFiddle.

<table>
<tr>

<td class="BBFieldCaption DonationCaptureFieldCaption" id="PC1920_DonationCapture1_AddressCtl_lbl_country">
<label id="PC1920_DonationCapture1_AddressCtl_lblCountry" for="PC1920_DonationCapture1_AddressCtl_dd_Country">Country:</label>
</td>

<td>
<select class="BBFormSelectList DonationCaptureSelectList" id="PC1920_DonationCapture1_AddressCtl_dd_Country" onchange="javascript:setTimeout('__doPostBack(\'PC1920$DonationCapture1$AddressCtl$dd_Country\',\'\')', 0)" name="PC1920$DonationCapture1$AddressCtl$dd_Country">
<option value=""></option>
<option value="Australia">Australia</option>
<option value="Bahamas">Bahamas</option>
<option value="Bermuda">Bermuda</option>
<option value="Canada">Canada</option>
<option value="France" selected="selected">France</option>
<option value="Germany">Germany</option>
<option value="Italy">Italy</option>
</select>
</td>
</tr>

<tr>
<td class="BBFieldCaption DonationCaptureFieldCaption" id="PC1920_DonationCapture1_AddressCtl_lbl_countyUK">
<label id="PC1920_DonationCapture1_AddressCtl_lblCountyUK" for="PC1920_DonationCapture1_AddressCtl_dd_CountyUK">County:</label>
</td>

<td class="taLeft BBFieldControlCell DonationCaptureFieldControlCell" id="PC1920_DonationCapture1_AddressCtl_ctl_countyUK">
<select class="BBFormSelectList DonationCaptureSelectList" id="PC1920_DonationCapture1_AddressCtl_dd_CountyUK" name="PC1920$DonationCapture1$AddressCtl$dd_CountyUK">
<option value="" selected="selected"></option>
<option value="Alcorn">Alcorn</option>
<option value="Alexander">Alexander</option>
</select>
</td>
</tr>
</table>

I have tried doing this with jquery by adding the following but have been unable to get this to work:

$(document).ready(function() {
$('#PC1920_DonationCapture1_AddressCtl_dd_Country').change(function() {
PC1920$DonationCapture1$AddressCtl$dd_Country = $('#PC1920_DonationCapture1_AddressCtl_dd_Country').val();

$('PC1920_DonationCapture1_AddressCtl_ctl_countyUK').hide();

if (PC1920$DonationCapture1$AddressCtl$dd_Country == 'France')
{
 $('PC1920_DonationCapture1_AddressCtl_ctl_countyUK').hide();
}

});
});

I do not have direct access to the HTML for the form, this is using a CMS system. I have also added this to JSFiddle, any help would be appreciated. Thank you! See JSFiddle here: http://jsfiddle.net/jelane20/qG2bT/7/

Answer 1

You seem to be missing a # in your selector. Change

if (PC1920$DonationCapture1$AddressCtl$dd_Country == 'France')
{
     $('PC1920_DonationCapture1_AddressCtl_ctl_countyUK').hide();
}

to

if (PC1920$DonationCapture1$AddressCtl$dd_Country == 'France')
{
     $('#PC1920_DonationCapture1_AddressCtl_ctl_countyUK').hide();
}

Answer 2

Try something like this -

 $(document).ready(function () {
     $('#PC1920_DonationCapture1_AddressCtl_dd_Country').change(function () {
         $(this).parents('tr').next().toggle($(this).val() !== "France");
     });
 });

Fiddle here