title: How can I check if a cookie has been set using jQuery?
body: <p>I am using the following code:</p>
  
  <pre><code>$('#theme').attr('href', $.cookie("jquery-ui-theme"));
  </code></pre>
  
  <p>This works if the cookie has already been set. But how can I make a default href if the cookie has not yet been se</p>