<?xml version="1.0" encoding="UTF-8"?>
<chapter>
      <section>
            <sectioninfo>
                  <keywordset>
                        <keyword>a4j:jsFunction</keyword>
                  </keywordset>
            </sectioninfo>
            
            <title>Description</title>
            <para>
                  The <emphasis role="bold"><property>&lt;a4j:jsFunction&gt;</property></emphasis> component allows to perform Ajax requests directly from JavaScript code, invoke server-side data and return it in a JSON format to use in a client JavaScript calls.
            </para>
      </section>
</chapter>