Using Apex:Variable in Visualforce to control rendering of HTML Markup

We mostly use apex:variable tag for declaring complex expressions or variables in visual force page. But the same can be used very easily to control the rendering too.

<apex:page controller="ApexVarController1">

<div>

        <!-- apex:variable tag to control the rendering for Markup --> 

<apex:variable

value="anything will go here" var="flag"

rendered="{!flag}">

<h1> Flag value is true </h1><br />

</apex:variable> 

<!-- apex:variable tag used to not render for a Markup --> 

<apex:variable value="anything will go here" var="flag1" rendered="{!flag1}">

<h1>Flag value is false</h1><br />

</apex:variable>

</div>

</apex:page>

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public class ApexVarController1 {

    public boolean flag { get;set;}

    public boolean flag1{get;set;}

    

    public ApexVarController1 (){

       flag=true;

       flag1=false;

    }

}

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