jQuery: get parent tr for selected radio button

Answer 1

Answer

$("#MwDataList input[name=selectRadioGroup]:checked").closest('tr');

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How to find the closest row?

Using .closest():

var $row = $(this).closest("tr");

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Using .parent():

Check this .parent() method. This is alternative of a .prev() and .next().

var $row = $(this).parent()             // Moves up from <button> to <td>
                  .parent();            // Moves up from <td> to <tr>

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Get All Table Cell <td>

var $row = $(this).closest("tr"),       // Finds the closest row <tr> 
    $tds = $row.find("td");             // Finds all children <td> elements

$.each($tds, function() {               // Visits every single <td> element
    console.log($(this).text());        // Prints out the text within the <td>
});

VIEW DEMO

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Get Only Specific <td>

var $row = $(this).closest("tr"),        // Finds the closest row <tr> 
    $tds = $row.find("td:nth-child(2)"); // Finds the 2nd <td> element

$.each($tds, function() {                // Visits every single <td> element
    console.log($(this).text());         // Prints out the text within the <td>
});

VIEW DEMO

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Useful methods

• .closest() - get the first element that matches the selector
• .parent() - get the parent of each element in the current set of matched elements
• .parents() - get the ancestors of each element in the current set of matched elements
• .children() - get the children of each element in the set of matched elements
• .siblings() - get the siblings of each element in the set of matched elements
• .find() - get the descendants of each element in the current set of matched elements
• .next() - get the immediately following sibling of each element in the set of matched elements
• .prev() - get the immediately preceding sibling of each element in the set of matched elements

Answer 2

Try this.

You don't need to prefix attribute name by @ in jQuery selector. Use closest() method to get the closest parent element matching the selector.

$("#MwDataList input[name=selectRadioGroup]:checked").closest('tr');

You can simplify your method like this

function getSelectedRowGuid() {
    return GetRowGuid(
      $("#MwDataList > input:radio[@name=selectRadioGroup]:checked :parent tr"));
}

closest() - Gets the first element that matches the selector, beginning at the current element and progressing up through the DOM tree.

As a side note, the ids of the elements should be unique on the page so try to avoid having same ids for radio buttons which I can see in your markup. If you are not going to use the ids then just remove it from the markup.