Visualforce - Beyond Basics

gistfile1.txt

<apex:page controller="testcls4_06122016" >
    <apex:form>
        <apex:actionPoller interval="5" action="{!timerFired}"
                           enabled="{!userRetries < 10}" reRender="UserMessage" />
        
        <apex:outputPanel id="UserMessage">
            User Retry Count - {!userRetries}
        </apex:outputPanel>
    </apex:form>
</apex:page>