jquery checked selector does not select checkd radio buttons code example
Example 1: jQuery check a radio button
// jQuery version 1.6 or above use:
$("#myRadioID").prop("checked", true);
//jQuery versions below 1.6 use:
$("#myRadioID").attr('checked', 'checked');
Example 2: jquery chek radio
//<input type="radio" name="book_condition" value="3" >
$("input:radio[value='3'][name='book_condition']").prop('checked',true);