title: Primefaces sum the particular column to show in footer
body: <p>I am using PrimeFaces 6.0 in my application.I use one of my page like bank challan.If user has type count to caluclate amount and total amount.</p>
  
  <pre><code>&lt;p:column headerText="Denomination"&gt;
  &lt;h:outputText value="#{bank.denominationAmt}"/&gt;
  &lt;/p:column&gt;
  &lt;p:column headerText="Count"&gt;
  &lt;p:inputText value="#{bank.count}"/&gt;
  &lt;/p:column&gt;
  &lt;p:column headerText="Amount"&gt;
  &lt;p:inputText value="#{bank.amt}"/&gt;
  &lt;/p:column&gt;
  ....
  </code></pre>
  
  <p>I need to user type count or amount to javascript or primefaces to show sum of amount  show in footerText is possible?</p>