Visualforce Developer Guide

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Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Advanced Examples
Override Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrate Email with Visualforce
Visualforce Charting
Creating Maps with Visualforce
Render Flows with Visualforce
Templating with Visualforce
Developing Salesforce Apps with Visualforce
Adding Visualforce to a Salesforce AppExchange App
Using JavaScript in Visualforce Pages
Communicating Across the DOM with Lightning Message Service
Visualforce Best Practices
Best Practices for Improving Visualforce Performance
Best Practices for Accessing Component IDs
Best Practices for Static Resources
Best Practices for Controllers and Controller Extensions
Best Practices for Using Component Facets
Best Practices for Page Block Components
Best Practices for Rendering PDF Files
Best Practices for <apex:panelbar>
Documentation Typographical Conventions
Standard Visualforce Component Reference
Appendices
PDF

Best Practices for Page Block Components

Adding More than Two Child Components to <apex:pageBlockSectionItem>
An <apex:pageBlockSectionItem> component can only have up to two child components. Sometimes, though, you want to add an extra child component. For example, you may want to add an asterisk before an <apex:outputLabel> and still display the associated input text field. You can do this by wrapping the asterisk and output label in an <apex:outputPanel> component, as follows:

For this page to display account data, the ID of a valid account record must be specified as a query parameter in the URL for the page. For example: 

https://MyDomain_login_URL/apex/myPage?id=001D000000IRosz

Note

<!-- Page: -->
<apex:page standardController="Account">
    <apex:form >
        <apex:pageBlock title="My Content" mode="edit">
            <apex:pageBlockSection title="My Content Section" columns="2">
                <apex:pageBlockSectionItem >
                    <apex:outputPanel>
                        <apex:outputText>*</apex:outputText>
                        <apex:outputLabel value="Account Name" for="account__name"/>
                    </apex:outputPanel>
                    <apex:inputText value="{!account.name}" id="account__name"/> 
                </apex:pageBlockSectionItem>
            </apex:pageBlockSection>
        </apex:pageBlock>
    </apex:form>
</apex:page>