Lightning Components Developer Guide
jNewer Version Available
addMessageHandler()
Mounts a message handling function, used to handle messages sent from the Lightning
component to the framed JavaScript app.
Sample
Used within a JavaScript app uploaded as a static resource and referenced by lightning:container, this example mounts a message handling
function. In a React app, functions must be mounted to be part of the document-object model
and rendered in the
output.
1componentDidMount() {
2 LCC.addMessageHandler(this.onMessage);
3}
4
5onMessage(msg) {
6 let name = msg.name;
7 if (name === "General") {
8 let value = msg.value;
9 this.setState({messageReceived: value});
10 }
11 else if (name === "Foo") {
12 // A different response
13 }
14}You can view and download this example in the Developerforce Github Repository.
Arguments
| Name | Type | Description |
|---|---|---|
| handler: (userMsg: any) => void | function | The function that handles messages sent from the Lightning component. |
Response
None.