h:datatable, how multiply row cell A with row cell B and set value in row cell C

[Milutin Markovic]

   <h:dataTable value="#{faktureUController.fsuItems}" var="item">
                     <h:column>
                         <f:facet name="header">
                              <h:outputText value="price"/>
                         </f:facet>
                         <h:outputText value="#{item.price}"/>
                     </h:column>
                     <h:column>
                         <f:facet name="header">
                              <h:outputText value="quantity"/>
                         </f:facet>
                         <h:outputText value="#{item.quantity}"/>
                     </h:column>
                     <h:column>
                         <f:facet name="header">
                              <h:outputText value="quantity*price"/>
                         </f:facet>
                         <h:outputText value="???RowCellPrice*RowCellQuantity????"/>
                     </h:column>
                </h:dataTable 

I know how to multiply that in backing bean and show in third cell. Bat what is interesting me how can multiply two cell on client side in jsf page. Thanks for any halp.

[Greg Charles]

I believe EL (expression language) supports basic arithmetic, so what you'd do is: #{item.price * item.quantity}

Otherwise, you can always add another getter to item's class that returns the extended value.

[Milutin Markovic]

Thanks