title: jQuery get request not returning anything
body: <p>I have the following jQuery script, which is supposed to get data from a web-location.</p>
  
  <p>First step is to load the data ... (after that I will have to do something with the data.)</p>
  
  <p>My problem is the first step. The stuff simply doesn't load.</p>
  
  <pre><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"&gt;&lt;/script&gt;
  
           &lt;script&gt;
  
              $(document).ready(function(){
  
                  var url = "http://vsr.informatik.tu-chemnitz.de/edu/2015/evs/exercises/jsajax/guestbook.php";
                  $.get(url, function(data){
                      alert("test");      
                  });
  
              });
  
          &lt;/script&gt;
  </code></pre>
  
  <p>This script does not alert "test". My question is: why not? What's wrong?</p>