title: XML filter is applied to non-XML value
body: <p>I am just starting to learn js and need your help.</p>
  
  <p>I have following code:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;test&lt;/title&gt;
      &lt;script src="jquery-1.4.2.min.js" type="text/javascript"&gt;&lt;/script&gt;
      &lt;script type="text/javascript"&gt; 
          $(function () { 
              $('.test1').(function(){
                      this.each(function () {
                      var a = $(this);
                      alert(a);
                  });
  
              });
          });
      &lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;pre class="test1"&gt;
  blabla1
  blabla2
  blabla3
  &lt;/pre&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>With this code I wanted to find out how "each" will split the content of the pre-tag. Firebug returns following error message: </p>
  
  <blockquote>
    <p>XML filter is applied to non-XML value</p>
  </blockquote>
  
  <p>The error is caused by this command: </p>
  
  <pre><code>$('.test1').(function(){...
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <p>Many thanks in advance!</p>