help I validate form problems using <a4j:commandButton>

[tungtrum17]

Hi All...

I have code jquery :

$j(".buttonsave").live("click",function(){

            if($j('.requiredF').val() == ''){

                alert("Error");

            }                      

       });

I using :

<h:inputText value="#{customerExpand.NV102}" id="firstname" styleClass="requiredF">

</h:inputText>

<a4j:commandButton  value='#{locale.save}' actionListener="#{customerExpand.saveN100andN590}"

                                                    onclick="showPleaseWait();"

                                                    oncomplete="hidePleaseWait();"

                                                    styleClass="buttonsave" reRender="message1,contact" >

</a4j:commandButton>

When input = null ---> code run ok but it still runs on the action although the error.I added ajaxSingle ="true" to the problem to be addressed is not at fault action.But when no error occurs, the a4j: commandButton is not in action.

Thanks All