Visualforce Developer Guide

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
Live Controller (Pilot)
Advanced Examples
Overriding Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrating 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 (Developer Preview)
Create a Message Channel
Publish on a Message Channel
Subscribe and Unsubscribe from a Message Channel
Considerations and Limitations
Best Practices
Standard Component Reference
Appendices
Glossary
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Create a Message Channel

To create a Lightning Message Channel in your org, use the LightningMessageChannel metadata type.

See LightningMessageChannel in the Metadata API Developer Guide (can be outdated or unavailable during release preview).

Note

To deploy a LightningMessageChannel into your org, create an SFDX project. Include the XML definition in the force-app/main/default/messageChannels/ directory. The LightningMessageChannel file name follows the format messageChannelName.messageChannel-meta.xml. To add it to your scratch org, run sfdx force:source:push. To add it to your Developer Edition org, run sfdx force:source:deploy.