jquery check radio input code example

Example 1: jquery checkbox checked value

if ($('#check_id').is(":checked"))
{
  // it is checked
}

Example 2: 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');