如何使用绝对行号从复选框中使用jQuery获取表单元格的值

Question

I have a table 'mytable' that looks like:

 <tr>
      <td><input type="checkbox" name="check[]" value="11"></td>   
      <td>11</td>
      <td>2014-11-06 18:49:26</td>
      <td>MESSAGE</td>
      <td></td>
      <td>MATCH5</td>
      <td>NO MATCH</td>
      <td>NO MATCH</td>
 </tr>

I want to get the value of column 4 "MESSAGE" from a row if its checked

as you can see each row begins with a checkbox which have a value. however the value is non-sequential so I can't just go with the checkbox value (which I have been getting with

var IDs = $('input:checked').map(function(){
    return $(this).val();
}).get();)

I need some way of counting table rows then I can use something like:

 var id= $("#myTable tr").eq(ID).find('td').eq(4).val()

How to do this?

Answer 1

You were pretty close but consider what this is in the context of map() .

this is the checkbox that is checked. From there you can find the closest tr and then the td with the 3rd 0-based index, and then get the text() of that td . td doesn't have a value so use text instead.

var ids = $('table input:checked').map(function(){
    return $(this).closest('tr').find('td:eq(3)').text();
});