Lightning Aura Components Developer Guide

Introducing Aura Components
Quick Start
Creating Components
Using Components
Aura Component Bundle Design Resources
Use Aura Components in Lightning Experience and the Salesforce Mobile App
Navigate Across Your Apps with Page References
Get Your Aura Components Ready to Use on Lightning Pages
Use Aura Components in Experience Builder
Use Aura Components with Flows
Add Components to Apps
Integrate Your Custom Apps into the Chatter Publisher
Using Background Utility Items
Use Lightning Components in Visualforce Pages
Use Aura and Lightning Web Components Outside of Salesforce with Lightning Out (Beta)
Lightning Container
Using a Third-Party Framework
Lightning Container Component Limits
lightning:container NPM Module Reference
addErrorHandler()
addMessageHandler()
callApex()
removeErrorHandler()
removeMessageHandler()
sendMessage()
Communicating with Events
Communicating Across the DOM with Lightning Message Service
Creating Apps
Styling Apps
Developing Secure Code
Using JavaScript
Working with Salesforce Data
Testing Components
Debugging
Performance
Reference
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

sendMessage()

Sends a message from the framed JavaScript code to the Aura component.

Sample

Used within a JavaScript app uploaded as a static resource and referenced by lightning:container, this example sends a message from the app to lightning:container.
1sendMessage() {
2  LCC.sendMessage({name: "General", value: this.state.messageToSend});
3}

Arguments

Name Type Description
userMsg any While the data sent in the message is entirely under your control, by convention it’s an object with name and value fields.

Response

None.