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
Using Dynamic References with Standard Objects
Using Dynamic References with Custom Objects and Packages
Reference Apex Maps and Lists
Working with Field Sets
Dynamic References to Global Variables
Dynamic References to Static Resources Using $Resource
Dynamic References to Action Methods Using $Action
Dynamic References to Schema Details Using $ObjectType
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
Standard Visualforce Component Reference
Appendices
PDF

Dynamic References to Global Variables

Visualforce pages can use dynamic bindings to reference global variables in their markup. Global variables allow you to access information about the current user, your organization, and schema details about your data. The list of global variables is available in the Global Variables, Functions, and Expression Operators appendix.

Referencing a global variable is the same as referencing sObjects and Apex classes—you use the same basic pattern, where reference is a global variable:
reference[expression]