title: jQuery keyup function not executing
body: <p>I have this code :</p>
  
  <pre><code>&lt;script&gt;
       $('#searchInput').keyup(function() {
                 alert('Handler for .keyup() called.');
       });
  &lt;/script&gt;
  </code></pre>
  
  <p>and this input :</p>
  
  <pre><code>&lt;input id='searchInput' type='text' placeholder='Search other alumni users' /&gt;
  </code></pre>
  
  <p>but when I press a key, the alert doesn't come up...
  I've included the jQuery script already.</p>