Answers for "radio check option by value jquery"

check radio button is checked jquery

$(document).ready(function(){
  $('#submit_button').click(function() {
    if (!$("input[name='name']:checked").val()) {
       alert('Nothing is checked!');
        return false;
    }
    else {
      alert('One of the radio buttons is checked!');
    }
  });
});

jquery select specific radio button by value

$("input[name=mygroup][value=" + value + "]").prop('checked', true);