Lightning Components Developer Guide

What is the Lightning Component Framework?
Quick Start
Creating Components
Using Components
Communicating with Events
Creating Apps
App Overview
Designing App UI
Creating App Templates
Developing Secure Code
Validations for Lightning Component Code
Styling Apps
Using JavaScript
JavaScript Cookbook
Using Apex
Lightning Data Service
Lightning Container
Using a Third-Party Framework
Lightning Container Component Limits
The Lightning Realty App
lightning-container NPM Module Reference
addMessageErrorHandler()
addMessageHandler()
callApex()
getRESTAPISessionKey()
removeMessageErrorHandler()
removeMessageHandler()
sendMessage()
Controlling Access
Using Object-Oriented Development
Using the AppCache
Distributing Applications and Components
Debugging
Fixing Performance Warnings
Reference
PDF

Newer Version Available

This content describes an older version of this product. View Latest

sendMessage()

Sends a message from the framed JavaScript code to the Lightning 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}

You can view and download this example in the Developerforce Github Repository.

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.