title: XQuery, check element empty?
body: <p>How can i check if a node has no text in it? I can use string($node)=""  because a node can be like this</p>
  
  <pre><code>&lt;node&gt;              &lt;/node&gt;
  </code></pre>
  
  <p>what i mean that, it can contain spaces but no text in it??</p>