title: Count child number using Xslt 1.0
body: <p>Return the number of child in a node.</p>
  
  <p>This is my XML:</p>
  
  <pre><code>&lt;LIGHT_INFORMATION_LIST&gt;
      &lt;LIGHT_INFORMATION&gt;
          &lt;LIGHT_COLOUR&gt;W-G&lt;/LIGHT_COLOUR&gt;
      &lt;/LIGHT_INFORMATION&gt;
      &lt;LIGHT_INFORMATION&gt;
          &lt;LIGHT_COLOUR&gt;W-R&lt;/LIGHT_COLOUR&gt;
      &lt;/LIGHT_INFORMATION&gt;
      &lt;LIGHT_INFORMATION&gt;
          &lt;LIGHT_COLOUR&gt;R&lt;/LIGHT_COLOUR&gt;
      &lt;/LIGHT_INFORMATION&gt;
      &lt;LIGHT_INFORMATION&gt;
          &lt;LIGHT_COLOUR&gt;G&lt;/LIGHT_COLOUR&gt;
      &lt;/LIGHT_INFORMATION&gt;
      &lt;LIGHT_INFORMATION&gt;
          &lt;LIGHT_COLOUR&gt;W&lt;/LIGHT_COLOUR&gt;
      &lt;/LIGHT_INFORMATION&gt;
  &lt;/LIGHT_INFORMATION_LIST&gt;
  </code></pre>
  
  <p>Request Output:<br/>
  The output request is 5. (The number of child called LIGHT_INFORMATION)</p>