title: jQuery not working on clicking radiobutton
body: <p>my code:</p>
  
  <pre><code>$(document).ready(function(){
      alert("document ready");
  
      $("input[type=radio]").click(function(event){
          alert("clicked");
      });
  });
  </code></pre>
  
  <p>But no alert shows up... And, when typing in on the console:<br>
   <code>$(document).ready(function(){ alert("document ready");})</code> I get the alert! What is going on here?</p>