jquery get checkbox inside element(td).

 <td id="skill"><input name="skill" type="checkbox" value="vc">
                 vc
                 <input name="skill" type="checkbox" value="vb">
                 vb
                 <input name="skill" type="checkbox" value="vf">
                 vf
                 <input name="skill" type="checkbox" value="vj">
                 vj
                 <input name="skill" type="checkbox" value="bc">
                 bc
                 <input name="skill" type="checkbox" value="co">
                 co
                 <input name="skill" type="checkbox" value="ja">
                 ja
                 <input name="skill" type="checkbox" value="delphi">
                 delphi<span id="skillReport"></span></td>

select all checkboxs:

  $('#skill input:checkbox').each(function (i) {
         this.checked = true;
     });

or simply :

  $('#skill :checkbox').each(function (i) {
         this.checked = true;
     });

get checked checkboxs:

$('#skill :checkbox').filter(':checked').each(function (i) {
        alert(this.value);
    });