Question

Does anyone knows how can I make a select all checkboxes in a table if I already have a column with checkboxes? I made one but when I click select all it selects all checkboxes from the table. I want to select checkboxes from a single column not all of them.

Answer 1

Easy jQuery answer:

$('td.theClass input[type="checkbox"]').prop('checked', true);

If you use jQuery version < 1.6:

$('td.theClass input[type="checkbox"]').attr('checked', 'checked');

This will check only checkboxes under the <td> with the class theClass.

The requested Live DEMO

Or if you want to select the second column by the index:

$('td:nth-child(2)').find('input[type="checkbox"]').prop('checked', true);​

Live DEMO