Show div when radio button selected

Question

I am novice in javascript and jQuery. In my html have 2 radio buttons and one div. I want to show that div if I check the first radio-button but otherwise I want it to be hi

Answer 1

 $('input[type="radio"]').change(function(){
      if($("input[name='group']:checked")){
      $(div).show();
    }
  });