What is the Difference Between Rendered, Rerender, RenderAs in Visualforce page?

SFDC-Interview-Questions-AnswersRendered it is used to show and hide elements works like css in general we can say display properties
<apex:pageBlock rendered=”{!ShowpageBlock}”>
Account NameĀ  :<apex:outputField value=”{!Account.Name}”/>
Account Number :<apex:outputField value=”{!Account.AccountNumber}”/>
</apex:pageBlock>

Rerender is used when you want to refresh only a portion
reRender= “pgblck1, pgbcl2”

RenderAs providing extension of page to create output like pdf, doc, excel
<apex:page standardController=”Account” renderAs=”pdf”>
<apex:pageBlock >
<apex:outputField value=”{!Account.name}”/>
<apex:outputField value=”{!Account.AccountNumber}”/>
</apex:pageBlock>
</apex:page>

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I am Sakthivel Madesh, a certified Salesforce Developer & Administrator working on Salesforce Technology since 2011. I am currently working in Techforce Services as Sr. Salesforce Developer. I have worked on multiple technologies Like PHP, Java, Salesforce, I am very passionate about Salesforce and to earn 13x Salesforce Certification. I love Trailhead for learning Salesforce Skill and Become a Trailhead Ranger too. I Love to Learn & Share my Salesforce knowledge to Salesforce Learners/Beginner using My Blog and Salesforce Community.

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